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ORGHPS's Germination Guide
Plant Name Full
Info
Viable Germ
Code
More
Info
Special
Info
Abelmoschus manihot K
Abies koreana 'Silberlocke' J 7
Abronia nana A 6 7
Acacia podalyriifolia A 6 7
Acacia species A 6 7
Acacia williamsonii A 6 7 *
Acaena adscendens A
Acaena buchananii E
Acaena caesiglauca E
Acaena glaucophylla K *
Acaena hieronymi A
Acaena magellanica E
Acaena microphylla E
Acaena microphylla 'Kupferteppich' E
Acaena myriophylla A
Acaena novae-zelandiae E
Acaena pinnatifida E
Acaena saccaticupula E 2 7
Acaena saccaticupula 'Blue Haze' E 2 7
Acaena sericea A
Acaena williamsonii E
Acantholimon all species B *
Acantholimon araxanum A *
Acantholimon armenum A *
Acantholimon avenaceum A
Acantholimon bracteatum A *
Acantholimon bracteatum var. capitatum A *
Acantholimon caryophyllaceum A *
Acantholimon compactum ! B *
Acantholimon glumaceum A *
Acantholimon hohenackeri ! B *
Acantholimon karelinii A *
Acantholimon litvinovii L
Acantholimon reflexifolium A *
Acantholimon saxifragiforme A *
Acantholimon sp. ! B *
Acantholimon ulicinum ! ? *
Acanthopanax sessiliflorus *
Acanthopanax sessiliflorus var. parviceps *
Acanthus hungaricus E 7
Acanthus mollis F 7
Acanthus mollis Latifolius Group F 7
Acanthus spinosus F 7
Acer amurensis H 7
Acer argutum L 7
Acer barbinerve G
Acer cappadocicum ssp. divergens J
Acer carpinifolium H 7
Acer caudatum ! G 7
Acer caudatum subsp. ukurunduense ! G 7
Acer davidii L
Acer ginnala G 7
Acer glabrum H 7
Acer glabrum var. douglasii H 7
Acer griseum G 6 7 *
Acer grosseri var. hersii G
Acer japonicum G *
Acer japonicum 'Aconitifolium' L
Acer japonicum f. 'Aconitifolium' L
Acer japonicum var. dissectum G *
Acer mandshuricum G 3 6 7 *
Acer palmatum G
Acer palmatum 'Dissectum' G
Acer palmatum 'Dissectum Viridis' G
Acer palmatum 'Emperor I' G
Acer palmatum 'Koto Ito' G
Acer palmatum 'Linearilobum' G
Acer palmatum 'Osakazuki' G
Acer palmatum 'Red Pygmy' G
Acer palmatum 'Shigi-tatsu-sawa' G
Acer palmatum 'Yasemin' G 7
Acer palmatum f. scolopendrifolium G 7
Acer palmatum var. dissectum (Dissectum Atropurpureum Group) G
Acer pensylvanicum L *
Acer pictum subsp. mono ! G 7
Acer pseudosieboldianum A 3 *
Acer saccharum subsp. nigrum G 7
Acer sieboldianum ! L *
Acer spicatum ! L 7
Acer tataricum 'Hot Wings' L 7
Acer tataricum subsp. ginnala L 7
Acer tegmentosum F *
Acer tetramerum ! L *
Acer triflorum D 7
Acer truncatum G 7
Acer tschonoskii subsp. koreanum ! G 7
Acer ukurunduense L 7
Achillea ageratifolia B 3
Achillea ageratifolia spp. aizoon B 3
Achillea ageratum A 3 *
Achillea alpina A
Achillea Anthea' A 3
Achillea asiatica B 3
Achillea biserrata A
Achillea clavennae K
Achillea clavennae var. intercedens K
Achillea filipendulina A 3
Achillea filipendulina 'Gold Plate' A 3
Achillea grandiflora A 3
Achillea holosericea A
Achillea huteri A
Achillea macrophylla A 3 4
Achillea millefolium A 3
Achillea millefolium 'Cassis' A
Achillea Moonshine' A 3
Achillea Moonwalker' A 3 *
Achillea nana B
Achillea nobilis subsp. neilreichii A 3
Achillea ptarmica A 3
Achillea ptarmica subsp. pyrenaica A 3
Achillea ptarmicifolia A 3
Achillea pyrenaica A 3
Achillea Schwellenburg' A 3
Achillea sibirica A 3
Achillea sibirica 'Stephanie Cohen' A 3
Achillea sibirica subsp. camtschatica A 3
Achillea sp. ?
Achillea Summer Pastels Group A 3
Achillea tomentosa A
Achillea tomentosa 'Aurea' A
Achillea umbellata A 1
Achillea x kellereri B 3
Achillea x lewisii 'King Edward' A 3
Achlys japonica L
Achnatherum calamagrostis A
Achnatherum extremiorientale A
Acidanthera bicolor K
Acidanthera sp. ?
Acinos alpinus A 3
Acis autumnalis A
Acis nicaeensis A
Acmella oleracea A
Aconitum alboviolaceum ! 4 *
Aconitum all species ! *
Aconitum altaicum ! K 3 *
Aconitum anthora ! *
Aconitum baicalense ! *
Aconitum bakeri ! *
Aconitum barbatum ! *
Aconitum barbatum ! *
Aconitum Bressingham Spire' ! *
Aconitum carmichaelii ! J *
Aconitum carmichaelii 'Arendsii' (Arendsii Group) ! J *
Aconitum columbianum ! *
Aconitum cymbulatum ! 4 *
Aconitum czekanovskyi ! *
Aconitum excelsum ! *
Aconitum ferox ! D *
Aconitum firmum ! *
Aconitum fischeri ! *
Aconitum gmelinii ! *
Aconitum hemsleyanum ! *
Aconitum hemsleyanum 'Red Wine' ! *
Aconitum heterophyllum ! J 2 4 7 *
Aconitum Ivorine' ! *
Aconitum jaluense ! *
Aconitum japonicum ! L *
Aconitum japonicum ! *
Aconitum kirinense ! *
Aconitum kitadakense ! *
Aconitum krylovii ! 4 *
Aconitum kusnezoffii ! 4 *
Aconitum lamarckii ! *
Aconitum lasiostomum ! *
Aconitum lycoctonum ! *
Aconitum lycoctonum ssp moldavicum ! *
Aconitum lycoctonum subsp. lycoctonum ! *
Aconitum lycoctonum subsp. neapolitanum ! *
Aconitum lycoctonum subsp. vulparia ! *
Aconitum moldavicum ! L *
Aconitum napellus ! *
Aconitum napellus 'Album' ! *
Aconitum napellus 'Schneewittchen' ! *
Aconitum napellus ssp grignae ! *
Aconitum nemorum ! *
Aconitum orientale ! L 4 *
Aconitum sachalinense ! J *
Aconitum sachalinense subsp. yezoense ! J *
Aconitum septentrionale ! *
Aconitum sinomontanum ! H *
Aconitum sp. ! *
Aconitum Stainless Steel' ! *
Aconitum tauricum ! *
Aconitum uncinatum ! *
Aconitum variegatum ! E *
Aconitum volubile ! J *
Aconitum vulparia ! *
Aconitum x cammarum 'Pink Sensation' ! *
Acorus calamus *
Actaea alba ! E 8 *
Actaea alba f. rubrocarpa ! E 8 *
Actaea all species *
Actaea americana E
Actaea asiatica L *
Actaea cimicifuga ! C
Actaea dahurica D 8 *
Actaea erythrocarpa E 8 *
Actaea europaea ! C
Actaea foetida ! C
Actaea japonica C
Actaea pachypoda ! H 8 *
Actaea pachypoda 'Misty Blue' ! H 8 *
Actaea pachypoda f. rubrocarpa ! H 8 *
Actaea podocarpa L *
Actaea racemosa ! C
Actaea rubifolia C *
Actaea rubra ! H 8 *
Actaea rubra f. neglecta ! H 8 *
Actaea simplex ! E
Actaea simplex 'Black Negligee' (Atropurpurea Group) ! E
Actaea simplex 'Brunette' C *
Actaea simplex 'Hillside Black Beauty' C *
Actaea simplex 'Variegata' ! E
Actaea sp. ! J *
Actaea spicata ! C 8 *
Actaea spicata var. alba ! C 8 *
Actinea herbacea A
Actinidia kolomikta G *
Adelocaryum anchusoides A
Adelocaryum coelestinum A 3
Adenophora bulleyana A
Adenophora confusa F
Adenophora himalayana F
Adenophora hoffmannii ?
Adenophora kurilensis A 3
Adenophora liliifolia A 3
Adenophora nikoensis F
Adenophora remotiflora K 3 *
Adenophora sp. F
Adenophora stricta subsp. confusa F
Adenophora tashiroi J
Adenophora triphylla F
Adenophora triphylla var. japonica F
Adenophora verticillata F
Adenostyles leucophylla A
Adiantum pedatum A *
Adlumia asiatica ? 3
Adlumia fungosa A 3
Adonis aestivalis ! A *
Adonis all species ! *
Adonis amurensis ! L *
Adonis amurensis 'Genshu Fukujuso' ! L *
Adonis amurensis var. pseudoamurensis ! L *
Adonis apennina ! A *
Adonis cyllenea ! A *
Adonis Fukujukai' ! L *
Adonis pseudoamurensis ! L *
Adonis pyrenaica ! L *
Adonis ramosa ! L *
Adonis sibirica ! A *
Adonis species ! L *
Adonis vernalis ! L *
Aesculus glabra ! G *
Aesculus parviflora ! L
Aesculus pavia ! A *
Aethionema armenum A
Aethionema armenum 'Mavis Holmes' A
Aethionema cordifolium A
Aethionema diastrophis A
Aethionema glaucescens A
Aethionema glaucinum A
Aethionema grandiflorum A
Aethionema iberideum A
Aethionema most species A
Aethionema oppositifolium G
Aethionema saxatile K
Aethionema schistosum A
Aethionema sp. A
Aethionema speciosum L
Aethionema subulatum F
Aethionema Warley Rose' A
Aethionema x warleyense A
Agalinus sp. K
Agapanthus 'Baby Blue' A *
Agapanthus 'Blue Danube' A *
Agapanthus 'Dazzler' A *
Agapanthus 'Streamline' A *
Agapanthus 'Twister' A *
Agapanthus 'White Heaven' A *
Agapanthus 'White Swan' A *
Agapanthus Blue Triumphator' A *
Agapanthus Donau' A *
Agapanthus Headborne hybrid ! A *
Agapanthus hybrid A *
Agapanthus Northern Star' A *
Agapanthus Peter Pan' A *
Agapanthus praecox A *
Agapanthus Queen Anne' A *
Agapanthus Rotterdam' A *
Agapanthus Septemberhemel' A *
Agapanthus Silver Moon' A *
Agapanthus sp. A *
Agastache 'Astell Indigo' A
Agastache 'Blue Fortune' A
Agastache 'Bronze Foliage' A
Agastache all species *
Agastache aurantiaca 'Apricot Sprite' A
Agastache cana A
Agastache cana 'Sonoran Sunset' A
Agastache foeniculum A 3
Agastache foeniculum 'Alba' A
Agastache foeniculum 'Aureum' A
Agastache foeniculum 'Blue Fountain' A 3
Agastache foeniculum 'Golden Jubilee' K 3
Agastache hybrid A
Agastache mexicana A
Agastache mexicana 'Rosea' A
Agastache Morello' A
Agastache neomexicana A
Agastache nepetoides A 3
Agastache pallidiflora subsp. neomexicana A
Agastache pink Pop' A
Agastache pringlei A
Agastache rugosa K
Agastache rugosa 'Golden Jubilee' K 3
Agastache rugosa 'Liquorice Blue' A
Agastache rugosa f. albiflora A
Agastache rupestris A 3
Agastache rupestris 'Apache Sunset' A 3
Agastache scrophulariifolia A 3
Agastache sp. A *
Agastache urticifolia A
Agastache wrightii A
Agave parryi A 3
Ageratina altissima G
Ageratina altissima 'Chocolate' G
Ageratina occidentalis A
Ageratum houstonianum A
Ageratum houstonianum 'Leilani Blue' A
Ageratum hybrid A
Ageratum sp. A
Agrimonia eupatoria B
Agrostemma githago K
Agrostemma githago 'Ocean Pearl' K
Agrostemma sp. K
Agrostis nebulosa A *
Aguilegia vulgaris 'Winky Blue' A
Ajania tibetica K
Ajuga pyramidalis A
Akebia quinata G
Albizia julibrissin A 6 7
Albizia julibrissin 'Summer Chocolate' A 6 7
Albizia julibrissin var. rosea A 6 7
Albuca humilis A 2
Albuca nelsonii ! A
Albuca shawii A 3
Albuca sp. ! ? *
Albuca tenuifolia A 3
Alcea all species B 2
Alcea apterocarpa A
Alcea East Coast Hybrid B 2
Alcea ficifolia A 2
Alcea froloviana A 6
Alcea hohenackeri A 6
Alcea kardiya K
Alcea pallida B
Alcea rosea A 3
Alcea rosea 'Black Watchman' B 2
Alcea rosea 'Blacknight' (Spotlight Series) B 2
Alcea rosea 'Fiesta Time' B 2
Alcea rosea 'Halo Cerise' A
Alcea rosea 'Mars Magic' A
Alcea rosea 'Nigra ' B 2
Alcea rosea 'Queeny Purple' B 2
Alcea rosea 'The Watchman' B 2
Alcea rosea Chater's Double Group B 2
Alcea rosea East Coast Hybrid A 4
Alcea rosea ssp. ficifolia B 2
Alcea rugosa A
Alcea sp. B 2
Alchemilla alpigena A 3 *
Alchemilla alpina ? *
Alchemilla erythropoda B
Alchemilla faeroensis var. pumila J
Alchemilla glaucescens A
Alchemilla glaucescens subsp. pubescens A
Alchemilla hoppeana A 3 *
Alchemilla hybrida A
Alchemilla mollis A 3
Alchemilla monticola K 3 *
Alchemilla most species *
Alchemilla plicatula A 3
Alchemilla pratensis K 3 *
Alchemilla sp. ?
Alchemilla velebitica A 3 *
Alchemilla visianii A 3 *
Alchemilla vulgaris A 3 *
Alfredia cernua A
Aliciella haydenii L
Aliciella subnuda L
Alisma plantago ! B *
Alisma plantago-aquatica ! B *
Alisma subcordatum L 6 7 *
Alisma triviale ! B *
Allium acuminatum J
Allium aflatunense E
Allium akaka A
Allium alataviense L
Allium all species *
Allium altaicum A
Allium altissimum K
Allium amabile J
Allium ampeloprasum A
Allium amphibolum A
Allium angulosum J
Allium atropurpureum J
Allium azureum A
Allium backhousianum L
Allium baissunense ?
Allium caeruleum A
Allium cardiostemon 'Purple Gem' ?
Allium carinatum F
Allium carinatum subsp. pulchellum F
Allium carinatum subsp. pulchellum f. album F
Allium carolinianum A
Allium cernuum A
Allium cernuum 'Graton' A
Allium cernuum 'Leo' A
Allium cernuum f. alba A
Allium cernuum var. obtusum A
Allium chrysanthum L
Allium cristophii J
Allium cyaneum F
Allium cyathophorum J
Allium cyathophorum var. farreri J
Allium falcifolium A
Allium farreri J
Allium fistulosum A
Allium flavum A
Allium flavum 'Blue Leaf' J
Allium flavum 'Minor' J
Allium flavum subsp. tauricum J
Allium flavum var. minus J
Allium forrestii G
Allium geyeri A 2
Allium giganteum G
Allium Globemaster' J
Allium gooddingii A 2
Allium grayi A
Allium gultschense J
Allium gunibicum L
Allium Hair' G
Allium hirtifolium G 6 *
Allium hollandicum G 6 *
Allium hollandicum 'Purple Sensation' G 6 *
Allium hyalinum J
Allium hybrid ?
Allium hymenorhizum ?
Allium insubricum J
Allium jajlae ?
Allium jesdianum E
Allium kansuense A
Allium karataviense ! H *
Allium karataviense 'Ivory Queen' ! H *
Allium karataviense 'Red Giant' ! H *
Allium karataviense subsp. henrikii ! H *
Allium kokanicum A
Allium komarovianum A
Allium komarowii F
Allium lusitanicum L
Allium luteolum J
Allium luteum A
Allium mairei var. amabile A
Allium Mars' B
Allium Millenium' L
Allium moly H *
Allium Mount Everest' J
Allium murrayanum J
Allium narcissiflorum A
Allium neapolitanum ! J
Allium nevskianum J
Allium nigrum E
Allium nutans A
Allium nutans x senescens A
Allium obliquum A
Allium ochotense A
Allium ochroleucum J
Allium oreophilum J
Allium oschaninii A
Allium ostrowskianum J
Allium paczoskianum A
Allium paniculatum F
Allium perdulce J
Allium prostratum G
Allium pseudojaponicum ?
Allium pskemense J
Allium pulchellum F
Allium purpureum G
Allium ramosum A *
Allium rosenbachianum J
Allium roseum J
Allium roseum 'Album' K
Allium rotundum A
Allium rotundum subsp. jajlae J
Allium sacculiferum A
Allium sarawschanicum ?
Allium saxatile J
Allium schoenoprasum A
Allium schoenoprasum 'Bode Pastel' A
Allium schoenoprasum 'Curly Mauves' A
Allium schoenoprasum 'Forescate' A
Allium schoenoprasum f. albiflorum A
Allium schubertii A
Allium senescens G
Allium senescens 'Blue Eddy' G
Allium senescens subsp. glaucum G
Allium senescens subsp. montanum G
Allium senescens subsp. senescens G
Allium senescens x nutans A
Allium serawschanicum L
Allium Setlife' J
Allium sewerzowii F
Allium siculum B
Allium sikkimense A
Allium Silver Spring' A
Allium siskiyouense F
Allium sp. J
Allium sphaerocephalum G
Allium splendens A
Allium stellatum A
Allium stellerianum A
Allium stipitatum G 6 *
Allium stipitatum 'Mount Everest' F
Allium strictum J
Allium Summer Beauty' G
Allium Summer Pink' J
Allium suworowii F 3 *
Allium sylvestris J
Allium szovitsii L
Allium tanguticum A
Allium textile J
Allium thunbergii J
Allium thunbergii 'Ozawa ' J
Allium togashii J
Allium tricoccum ! E
Allium tripedale J
Allium tschimganicum ?
Allium tuberosum A
Allium uliginosum A
Allium unifolium J
Allium ursinum ! J
Allium victorialis ! A
Allium victorialis var. platyphyllum ! A
Allium vineale G
Allium zebdanense J
Alnus japonica A 3
Aloe marlothii A 3
Aloinopsis spathulata A
Alonsoa linearis A
Alstroemeria all species C 7 *
Alstroemeria aurantiaca C 7 *
Alstroemeria aurea C 7 *
Alstroemeria aurea 'Lutea' C 7 *
Alstroemeria Dr. Salter's Hybrids' J *
Alstroemeria hybrids C 2 7 *
Alstroemeria ligtu hybrids C 2 7 *
Alstroemeria lutea A 7
Alstroemeria presliana subsp. australis ?
Alstroemeria psittacina C 7 *
Alstroemeria sp. C 7 *
Alternanthera ficoidea A
Althaea armeniaca A
Althaea officinalis A
Althaea rosea A
Althaea rugosa B 2
Althaea taurinensis A
Alyssoides all species A
Alyssoides graeca B
Alyssoides utriculata B
Alyssum alyssoides A
Alyssum arcticum A
Alyssum argenteum A
Alyssum bertolonii subsp. bertolonii A
Alyssum caespitosum A 3
Alyssum cuneifolium B
Alyssum dagestanicum A 3
Alyssum fischerianum A 3
Alyssum Gold Crest' A
Alyssum handelii A 3
Alyssum idaeum A 3
Alyssum lenense A 3
Alyssum macrocarpum A
Alyssum markgrafii A 3
Alyssum montanum A
Alyssum most species A
Alyssum ovirense A
Alyssum oxycarpum A
Alyssum propinquum A
Alyssum pulvinare J
Alyssum saxatilis A
Alyssum serpyllifolium A
Alyssum sp. A
Alyssum spinosum A 3
Alyssum spinosum 'Roseum' A 3
Alyssum stribrnyi A
Alyssum wulfenianum A
Amaranthus caudatus A
Amaranthus cruentus A *
Amaranthus cruentus ?Velvet Curtains? A *
Amaranthus hybrid A *
Amaranthus hybridus A *
Amaranthus hypochondriacus A *
Amaranthus sp. A *
Amaryllis sp. A *
Amberboa muricata A
Amelanchier canadensis *
Amianthium muscitoxicum C
Ammi majus A 2
Ammi visnaga A
Ammi visnaga 'Green Mist' A
Amorpha canescens A 6 7
Amorpha nana G 6
Amorphophallus titanum ! A *
Ampelodesmos mauritanicus A 3
Ampelopsis brevipedunculata G 8
Ampelopsis brevipedunculata 'Variegata' G 8
Ampelopsis brevipedunculata var. maximowiczii G 8
Ampelopsis glandulosa var. brevipedunculata G 8
Amphicarpaea bracteata A 7
Amphicarpaea bracteata v. comosa A 7
Amsonia ciliata 'Halfway to Arkansas' L 7
Amsonia ellipsoides G
Amsonia elliptica C
Amsonia hubrichtii J
Amsonia illustris F
Amsonia jonesii A 3
Amsonia ludoviciana F
Amsonia orientalis G
Amsonia sp. F
Amsonia tabernaemontana G
Amsonia tabernaemontana 'Blue Ice' G
Amsonia tabernaemontana 'Montana' G
Amsonia tabernaemontana var. salicifolia G
Anacampseros densifolia A
Anacyclus depressus A
Anacyclus pyrethrum A
Anacyclus pyrethrum var. depressus A
Anacyclus pyrethrum var. depressus 'Garden Gnome' A
Anagallis all species *
Anagallis linifolia A
Anagallis monelli A
Anagallis monelli 'Skylover' A
Anagallis monelli subsp. linifolia A
Anaphalis alpicola A
Anaphalis lactea A
Anaphalis margaritacea A
Anaphalis triplinervis A
Anchusa angustifolia A 2
Anchusa azurea A
Anchusa azurea 'Dropmore' A
Anchusa azurea 'Feltham Pride' A
Anchusa capensis A
Anchusa leptophylla A
Anchusa leptophylla subsp. incana A
Anchusa officinalis A 2
Anchusa officinalis 'Angustifolia' A 2
Anchusa sp. A
Andromeda glaucophylla E
Andromeda polifolia K *
Andropogon gerardii A
Andropogon scoparius A
Andropogon ternarius A
Androsace adfinis E 3
Androsace adfinis ssp. brigitanica E 3
Androsace alba A
Androsace albana F
Androsace alpina A *
Androsace amurensis A 3
Androsace armeniaca var. macrantha A
Androsace barbulata A
Androsace brigantiaca E 3
Androsace carnea E 3
Androsace carnea 'Alba' F
Androsace carnea cross E 3
Androsace carnea mix E 3
Androsace carnea subsp. brigantiaca E 3
Androsace carnea subsp. laggeri E 3
Androsace carnea subsp. rosea E 3
Androsace carnea x pyrenaica E 3
Androsace chaixii H 3
Androsace chamaejasme A
Androsace ciliata G
Androsace cylindrica subsp. hirtella J
Androsace darvasica B
Androsace fedtschenkoi J
Androsace filiformis G
Androsace hausmannii ! L
Androsace hedreantha L
Androsace hirtella J
Androsace incana ! A
Androsace lactea H *
Androsace lactiflora A 3
Androsace laevigata L
Androsace lanuginosa E
Androsace mairei E 3
Androsace mathildae F
Androsace maxima A
Androsace Millstream' E 3
Androsace montana ! L
Androsace muscoidea A *
Androsace obtusifolia F
Androsace primuloides G
Androsace pyrenaica F
Androsace rotundifolia A
Androsace salicifolia A 3
Androsace sarmentosa G
Androsace sarmentosa ssp. primuloides G
Androsace sarmentosa subsp.primuloides G
Androsace sempervivoides A 3 *
Androsace septentrionalis A
Androsace septentrionalis ?Star Dust? A
Androsace sericea G
Androsace sp. L
Androsace spinulifera ! A
Androsace strigillosa K
Androsace studiosorum G
Androsace studiosorum 'Salmon's Variety' G
Androsace umbellata A 5
Androsace vandellii A
Androsace villosa A
Androsace villosa subsp. koso-poljanskii A
Androsace villosa var. arachnoidea G
Androsace x pedemontana J
Andryala agardhii A
Andryala integrifolia A
Andryala lanata A
Anemonastrum biarmiense ! A
Anemone alpina ! A
Anemone pulsatilla 'Pearl Bells' ! A
Anemone aconitifolia ! G
Anemone alpina ! A
Anemone alpina ssp apiifolia ! A
Anemone altaica ! A
Anemone baicalensis ! A
Anemone baldensis ! A
Anemone barbulata A
Anemone biarmiensis ! A
Anemone blanda A
Anemone canadensis ! E
Anemone caroliniana A
Anemone coronaria ! K
Anemone coronaria 'The Bride' ! A
Anemone crinita ! A *
Anemone cylindrica ! A
Anemone demissa ! A
Anemone dichotoma ! ? *
Anemone drummondii ! A
Anemone drummondii var. lithophila ! A
Anemone fasciculata ! L
Anemone flavescens ! A
Anemone globosa ! A
Anemone Guernica' ! A 2
Anemone halleri ! A
Anemone helvetica ! A
Anemone hortensis A
Anemone hupehensis ! B
Anemone hupehensis var. japonica 'Pamina' ! B
Anemone lesseri ! A 3
Anemone leveillei ! J
Anemone lithophila ! L
Anemone lithophilia ! J
Anemone lutea ! D *
Anemone magellanica ! A
Anemone multifida ! A
Anemone multifida 'Annabella Deep Rose' (Annabella Series) ! A
Anemone multifida 'Major' ! A
Anemone multifida 'Rubra' ! A
Anemone multifida var. globosa ! A
Anemone narcissiflora ! A
Anemone narcissiflora subsp. biarmiensis ! A
Anemone narcissiflora subsp. fasciculata ! A
Anemone nemorosa ! E *
Anemone obtusiloba ! A *
Anemone occidentalis ! A
Anemone palmata ! A
Anemone parviflora ! A
Anemone patens ! J
Anemone patens var. wolfgangiana ! J
Anemone pavonina ! A
Anemone pseudoaltaica ! A
Anemone pulsatilla ! A 9
Anemone pulsatilla 'Papageno' A
Anemone pulsatilla 'Rote Glocke' ! A 9
Anemone ranunculoides ! D *
Anemone riparia ! G
Anemone rivularis ! J
Anemone rivularis var. flore-minore ! A
Anemone rupicola ! A
Anemone slavica ! A
Anemone sp. ! A
Anemone sylvestris ! A
Anemone sylvestris 'Grandiflora' ! A
Anemone transsilvanica ! L
Anemone trifolia ! A *
Anemone trullifolia ! L
Anemone trullifolia 'Lutea' ! L
Anemone tschernaewii ! B
Anemone tuberosa ! C *
Anemone virginiana ! B
Anemone x hybrida 'Honorine Jobert' ! B *
Anemone x hybrida 'Josephine' ! B
Anemone x hybrida 'September Charm' ! B
Anemone x hybrida 'September Sprite' ! B
Anemone x lesseri ! A
Anemonella thalictroides ! G 2 *
Anemonoides baldensis ! A
Anemonopsis macrophylla ! A *
Anemopsis californica A *
Anethum graveolens A
Angelica archangelica A 3
Angelica archangelica subsp. litoralis A 3
Angelica arguta L 7
Angelica atropurpurea ! L 3
Angelica dahurica ! A 3
Angelica gigas ! A 3
Angelica grayi A 3
Angelica hispanica ! L *
Angelica keiskei ! A 3 7
Angelica pachycarpa A
Angelica sachalinensis ! ?
Angelica sinensis ! A 3
Angelica sp. ! C
Angelica sylvestris ! A 3
Angelica sylvestris 'Purpurea' ! A 3
Angelica sylvestris 'Vicar`s Mead' ! A 3
Angelica ursina ! A 3
Angelonia angustifolia A
Anigozanthos manglesii A
Anisodus luridus F
Anomatheca laxa A 3 *
Anomatheca laxa var. alba A 3 *
Anomatheca sp. A
Antennaria alpina F
Antennaria dioica A
Antennaria dioica 'Minima' F
Antennaria dioica 'Nyewoods Variety' F
Antennaria dioica 'Rosea' F
Antennaria dioica 'Rubra' F
Antennaria dioica var. rosea F
Antennaria friesiana F
Antennaria linearifolia A
Antennaria media L 3
Antennaria monocephala A
Antennaria neglecta F
Antennaria neglecta var. gaspensis F
Antennaria neodioica subsp. rosea A
Antennaria pulcherrima A
Antennaria rosea F
Antennaria rosea subsp. confinis A
Antennaria rosea subsp. pulvinata A
Antennaria solitaria A
Antennaria sp. F
Antennaria straminea A
Antennaria suffrutescens A
Anthemis aizoon B 3
Anthemis carpatica A
Anthemis carpatica subsp. pyrethriformis A
Anthemis cretica A
Anthemis cretica subsp. pontica A
Anthemis marschalliana A
Anthemis pauciloba A
Anthemis rudolphiana A
Anthemis sancti-johannis A
Anthemis sp. A
Anthemis sterilis K
Anthemis tinctoria A
Anthemis tinctoria 'Wargrave Variety' A
Anthemis tranzscheliana K
Anthemis triumfettii A
Anthericum liliago A
Anthericum liliastrum L
Anthericum lusitanicum L
Anthericum ramosum J
Anthriscus cerefolium A 1 3
Anthriscus sylvestris 'Ravenswing' A *
Anthyllis coccinea B 3 7
Anthyllis hermanniae L
Anthyllis montana A 6 7 *
Anthyllis montana 'Rubra' A 6 7
Anthyllis montana subsp. atropurpurea ! A 3 7
Anthyllis montana subsp. jacquinii A 6 7
Anthyllis vulneraria ! A 3 7
Anthyllis vulneraria subsp. alpestris A 3 7
Anthyllis vulneraria subsp. pulchella K 6 7
Anthyllis vulneraria var. coccinea ! A 3 7
Anticlea elegans J
Antirrhinum braun-blanquetii A
Antirrhinum Chandelier Lilac Blush' A
Antirrhinum hispanicum A
Antirrhinum majus A
Antirrhinum majus 'Black Prince' A
Antirrhinum majus 'Rocket Red' A
Antirrhinum majus subsp. majus A
Antirrhinum molle A *
Antirrhinum sempervirens L
Antirrhinum sp. A
Apios americana K 7
Apocynum androsaemifolium A
Aquilegia 'Lime Sorbet' A
Aquilegia 'Pink Ruffle' A
Aquilegia akitensis A
Aquilegia all species *
Aquilegia alpina ! A 4
Aquilegia amaliae A
Aquilegia atrata E
Aquilegia aurea A
Aquilegia barnebyi A
Aquilegia bertolonii ! A 3
Aquilegia bertolonii 'Blue Berry' A
Aquilegia Biedermeier Group A
Aquilegia Blue Jay' (Songbird Series) A
Aquilegia borodinii A
Aquilegia brevistyla A 3
Aquilegia buergeriana ! A
Aquilegia caerulea A
Aquilegia canadensis J
Aquilegia canadensis 'Corbett' J 4 *
Aquilegia canadensis 'Little Lanterns' J
Aquilegia canadensis 'Nana' J 4 *
Aquilegia chaplinei A 2 4
Aquilegia chrysantha A 2 4
Aquilegia chrysantha 'Yellow Queen' A 2 4
Aquilegia chrysantha var. chaplinei A 2 4
Aquilegia clematiflora A
Aquilegia columbiana A
Aquilegia desertorum A
Aquilegia discolor D 4
Aquilegia Dwarf Fantasy' A 4
Aquilegia ecalcarata ! J
Aquilegia elegantissima A
Aquilegia flabellata A 4
Aquilegia flabellata 'Alba' A 4
Aquilegia flabellata 'Cameo Pink' (Cameo Series) A 4
Aquilegia flabellata 'Flore Pleno Alba' A 4
Aquilegia flabellata 'Ministar' A 4
Aquilegia flabellata 'Nana Alba' A 4
Aquilegia flabellata 'Nana' A 4
Aquilegia flabellata Cameo Series A 4
Aquilegia flabellata f. alba A 4
Aquilegia flabellata var. kurilensis A 4
Aquilegia flabellata var. nana A 4
Aquilegia flabellata var. pumila A 4
Aquilegia flabellata var. pumila f. alba A 4
Aquilegia flavescens L
Aquilegia formosa A
Aquilegia formosa ssp.. canadensis A
Aquilegia fragrans A
Aquilegia glandulosa A
Aquilegia glandulosa var. jucunda A
Aquilegia grahamii L
Aquilegia Hensol Harebell' A
Aquilegia hybrid A
Aquilegia hybrida A 3
Aquilegia hybrids A
Aquilegia jonesii A 3
Aquilegia jonesii x saximontana ! A 4
Aquilegia karelinii ! J
Aquilegia Kristall' A
Aquilegia kurdistanica L
Aquilegia laramiensis A 4
Aquilegia Leprechaun Gold' A
Aquilegia longissima A
Aquilegia Magpie' A
Aquilegia McKana Group A
Aquilegia micrantha A
Aquilegia micrantha v. grahamii A
Aquilegia microphylla A 4
Aquilegia montana A
Aquilegia Mrs Scott Elliot hybrids A
Aquilegia nigricans A
Aquilegia nigricans subsp. subscaposa A
Aquilegia olympica L
Aquilegia Origami Mix' A
Aquilegia ottonis A
Aquilegia oxysepala L
Aquilegia parviflora A
Aquilegia Perfumed Garden Group A
Aquilegia pyrenaica A
Aquilegia pyrenaica subsp. cazorlensis G 4
Aquilegia pyrenaica subsp. discolor A
Aquilegia Red Hobbit' A
Aquilegia saximontana G 4 *
Aquilegia saximontana cross G 4 *
Aquilegia saximontana x jonesii A
Aquilegia scopulorum G 4 *
Aquilegia shockleyi A 3
Aquilegia sibirica A
Aquilegia sp. A
Aquilegia subscaposa A
Aquilegia thalictroides A
Aquilegia triternata J
Aquilegia ullepitschii A
Aquilegia viridiflora A 3
Aquilegia vulgaris A
Aquilegia vulgaris 'Burnished Rose' A
Aquilegia vulgaris 'Magpie' A
Aquilegia vulgaris 'Nivea' A
Aquilegia vulgaris 'Pink Petticoat' A
Aquilegia vulgaris 'William Guiness' A
Aquilegia vulgaris 'Winky Purple-White' A
Aquilegia vulgaris 'Woodside' (Vervaeneana Group) A
Aquilegia vulgaris double A
Aquilegia vulgaris Grandmother's Garden Group A
Aquilegia vulgaris hybrid A
Aquilegia vulgaris v. stellata 'Blue Barlow' A
Aquilegia vulgaris var. alba A
Aquilegia vulgaris var. flore-pleno A
Aquilegia vulgaris var. flore-pleno 'Tower Light Blue' A
Aquilegia vulgaris var. floro-plena 'Double Pleat' A
Aquilegia vulgaris var. stellata A
Aquilegia vulgaris var. stellata 'Black Barlow' (Barlow Series) A
Aquilegia vulgaris var. stellata 'Blue Barlow' A
Aquilegia vulgaris var. stellata 'Nora Barlow' A
Aquilegia vulgaris var. stellata 'Ruby Port' A
Aquilegia Winky Purple-White' A
Aquilegia x hybrida A
Aquilegia x scopulorum G 4
Aqulilegia sp. A
Arabis all species A
Arabis allionii A
Arabis alpina A *
Arabis alpina ssp. caucasica A *
Arabis alpina subsp. caucasica A *
Arabis androsacea A
Arabis blepharophylla A
Arabis blepharophylla 'Fruhlingszauber' A
Arabis blepharophylla 'Red Sensation' A
Arabis bryoides F
Arabis caerulea A
Arabis caucasica A 3
Arabis caucasica 'Rosea' A 3
Arabis caucasica 'Schneehaube' A 3
Arabis caucasica 'Snowfix' A *
Arabis collina A
Arabis collina subsp. rosea A
Arabis koehleri A
Arabis muralis A
Arabis pieninica A *
Arabis pumila A
Arabis purpurea A
Arabis scopoliana A 3
Arabis sp. A
Arabis stelleri var. japonica A
Arabis Variegata' ? 3
Arabis x arendsii A
Arabis x arendsii 'Rosabella' L
Arabis x sturii A
Aralia cachemirica L
Aralia californica G
Aralia chinensis G
Aralia continentalis G
Aralia cordata ! L
Aralia cordata 'Sun King' ! L
Aralia cordata var. sachalinensis ! L
Aralia edulis ! L
Aralia elata G
Aralia elata 'Variegata' G
Aralia hispida L
Aralia nudicaulis ! H *
Aralia racemosa ! H 4
Aralia sp. H 6 8 *
Arctanthemum arcticum A
Arcterica nana K
Arctostaphylos all species L 3 6 7 *
Arctostaphylos uva-ursi ! G 6 7 *
Arctotis acaulis A
Arctotis adpressa A
Arctotis fastuosa A
Arctotis grandis A
Arctotis rosea A
Arctotis stoechadifolia A
Arctotis venusta A
Ardisia primulifolia ? *
Arenaria all species A
Arenaria balearica A
Arenaria cretica A 3
Arenaria festucoides B
Arenaria grandiflora A
Arenaria kingii A
Arenaria ledebouriana F
Arenaria longifolia A
Arenaria montana A
Arenaria norvegica A *
Arenaria obtusiloba A
Arenaria procera subsp. glabra A
Arenaria pseudacantholimon A *
Arenaria sp. A
Arenaria tetraquetra A
Arenaria tetraquetra subsp. amabilis A
Argemone grandiflora A 2
Argemone hispida L *
Argemone mexicana K
Argemone mexicana var. ochroleuca K
Argemone sp. K
Argemone squarrosa A
Argemone squarrosa subsp. glabrata A
Argentina egedii A
Argyranthemum frutescens A
Argyranthemum pinnatifidum A
Arisaema all species 8 *
Arisaema amurense A 8 *
Arisaema angustatum var. peninsulae A 8 *
Arisaema atrorubens A 8 *
Arisaema bockii B 8 *
Arisaema candidissimum A 8 *
Arisaema ciliatum A 8 *
Arisaema ciliatum 'Sky Wish' A 8 *
Arisaema ciliatum var. liubaense A 8 *
Arisaema consanguineum A 8 *
Arisaema consanguineum 'The Perfect Wave' A 8 *
Arisaema dracontium A 8 *
Arisaema engleri B 8 *
Arisaema fargesii A 8 *
Arisaema flavum A 8 *
Arisaema flavum subsp. abbreviatum B 8 *
Arisaema griffithii A 8 *
Arisaema helleborifolium A 8 *
Arisaema heterophyllum A 8 *
Arisaema himalaicum 8 *
Arisaema jacquemontii A 8 *
Arisaema japonicum A 8 *
Arisaema ovale B 8 *
Arisaema peninsulae A 8 *
Arisaema quinatum 8 *
Arisaema ringens A 8 *
Arisaema robustum A 8 *
Arisaema serratum A 8 *
Arisaema serratum 'Silver Leaf Form' A 8 *
Arisaema serratum var. serratum A 8 *
Arisaema sikokianum A 8 *
Arisaema sikokianum x takedae A 2 8 *
Arisaema sp. D 8 *
Arisaema speciosum F 8 *
Arisaema tortuosum A 8 *
Arisaema triphyllum A 8 *
Arisaema triphyllum 'Mrs French's veined form' A 8 *
Arisaema triphyllum 'Starburst' A 8 *
Arisaema triphyllum subsp. quinatum A 8 *
Arisaema urashima A 8 *
Arisaema utile A 8 *
Arisaema yunnanense A 8 *
Arisarum proboscideum A
Aristea capitata C
Aristlochia firmbriata A 7 8
Aristolochia contorta A
Aristolochia fimbriata A 7
Aristolochia littoralis A
Armeria alliacea L
Armeria alliacea f. leucantha L
Armeria alpina A *
Armeria Bee's hybrids A
Armeria bourgaei A 2
Armeria caespitosa ! A *
Armeria duriaei A 2
Armeria euscadiensis A
Armeria filicaulis A 2
Armeria formosa hybrids A
Armeria hybrida A 7
Armeria Joystick Red' A
Armeria Joystick Series A
Armeria juniperifolia A *
Armeria latifolia A
Armeria latifolia var. macrantha B
Armeria maritima A 2
Armeria maritima 'Laucheana ' A 2
Armeria maritima 'Ministicks White' A 2
Armeria maritima 'Rubrifolia ' A 2
Armeria maritima 'Vindictive' A 2
Armeria maritima subsp. alpina A 2
Armeria maritima subsp. bottendorfensis A 2
Armeria maritima subsp. elongata A 2
Armeria maritima subsp.sibirica A 2
Armeria maritima var. labradorica A 2
Armeria morisii B
Armeria Ornament' A 7
Armeria plantaginea B
Armeria pseudarmeria B
Armeria rhodopea A
Armeria rubrifolia K
Armeria rumelica A
Armeria ruscinonensis A 2
Armeria scabra A 2
Armeria scabra subsp. sibirica A 2
Armeria scabra var. sibirica A 2
Armeria sp. A
Armeria splendens A 2
Armeria trojana A
Armeria Vesuvius' B
Armeria welwitschii A
Arnebia echioides A
Arnebia pulchra C
Arnica alpina A
Arnica angustifolia J
Arnica angustifolia subsp. iljinii J
Arnica chionopappa K
Arnica cordifolia K
Arnica frigida A
Arnica iljinii A
Arnica lonchophylla K
Arnica longifolia A
Arnica montana A
Arnica montana subsp. montana A
Arnica nevadensis A
Arnica sachalinensis ?
Arnica sp. ?
Aronia melanocarpa G 7
Aronia melanocarpa ?Red Viking? C
Aronia melanocarpa 'Autumn Magic' J 7
Aronia x prunifolia G 7
Artemisia chamaemelifolia F
Artemisia cretacea A
Artemisia dracunculus F
Artemisia frigida A 3
Artemisia genipi F
Artemisia lactiflora (Guizhou group) F
Artemisia ludoviciana 'Valerie Finnis' B 3 *
Artemisia molinieri A
Artemisia nutans A
Artemisia pamirica A 2
Artemisia Powis Castle' A 3
Artemisia rutifolia ?
Artemisia stelleri A
Artemisia stelleriana 'Boughton Silver' F
Artemisia stelleriana 'Silver Brocade' F
Artemisia vachanica A
Artemisia vallesiaca A
Artemisia viridis A
Arthropodium candidum L
Arthropodium cirrhatum A
Arum Chameleon' ! D 2 7 *
Arum concinnatum ! D 2 7 *
Arum dioscoridis H *
Arum italicum ! D 2 7 *
Arum italicum ?White Winter' ! D 2 7 *
Arum italicum 'McClement Form' ! D 2 7 *
Arum italicum 'Pictum ' ! D 2 7 *
Arum italicum subsp. italicum 'Marmoratum' ! D 2 7 *
Arum maculatum ! D 2 7 *
Arum palaestinum ! D 2 7 *
Arum sp. ! D 2 7 *
Aruncus aestivus J 3
Aruncus aethusifolius J
Aruncus aethusifolius 'Noble Spirit' H
Aruncus dioicus A
Aruncus dioicus 'Kneiffii ' A
Aruncus dioicus var. aethusifolius J
Aruncus hybrid K
Aruncus laciniatus E
Aruncus Misty Lace' ? *
Aruncus most species *
Aruncus sp. K
Aruncus sylvester J 3
Aruncus vulgaris A
Asarina erubescens A
Asarina Joan Lorraine' A
Asarina procumbens A 3
Asarina purpusii A
Asarina scandens A
Asarina scandens 'Joan Lorraine' A
Asarina sp. A
Asarum canadense ! E *
Asarum europaeum ! E 8 *
Asclepias all species *
Asclepias curassavica A
Asclepias exaltata J
Asclepias incarnata A 1 3 *
Asclepias incarnata 'Alba' J 1 3 *
Asclepias incarnata 'Cinderella ' J 1 3 *
Asclepias incarnata 'Ice Ballet' J 1 3 *
Asclepias incarnata 'Soulmate' J 1 3 *
Asclepias purpurascens G
Asclepias purpurea J
Asclepias sp. A *
Asclepias syriaca A
Asclepias tuberosa A 1 *
Asclepias tuberosa 'Hello Yellow' A 1 *
Asclepias tuberosa Gay Butterflies Group A 1 *
Asclepias verticillata L
Asimina triloba ! J
Asparagus officinalis A 7
Asparagus officinalis A 7
Asparagus officinalis var. psuedoscaber A 7
Asperula abchasica L
Asperula azurea A
Asperula capitata A 3
Asperula glauca ?
Asperula glomerata subsp. glomerata A 3
Asperula gussonei A
Asperula nitida L
Asperula nitida subsp. hirtella L
Asperula orientalis A
Asperula tinctoria J
Asphodeline damascena A
Asphodeline liburnica A 2
Asphodeline lutea A
Asphodeline sp. K
Asphodeline taurica A
Asphodelus albus A
Asphodelus cerasiferus B
Asphodelus damascenus A
Asphodelus fistulosus K
Asphodelus luteus A
Aspleniaceae whole genus A *
Asplenium trichomanes A *
Aster acuminatus B
Aster ageratoides A 3
Aster ageratoides 'Star Shine' A
Aster ageratoides 'Tiny Theo' A 3
Aster all species *
Aster alpigenus A
Aster alpinus A
Aster alpinus 'Albus' A
Aster alpinus 'Dark Beauty' J
Aster alpinus 'Goliath' J
Aster alpinus 'Happy End' J
Aster alpinus 'Maerchenland' A
Aster alpinus 'Pinkie' J
Aster alpinus 'White Beauty'' J
Aster alpinus hybrid J
Aster alpinus subsp. dolmiticus J
Aster altaicus B 3
Aster amellus 'Rudolphe Goethe' ! L
Aster asteroides ssp. costei A 3
Aster chinensis 'Hulk' B
Aster coloradoensis B
Aster conspectus B 2
Aster cordifolius B
Aster diplostephioides J
Aster divaricatus B
Aster dumosus 'Gold Flake' B
Aster ericoides ! H
Aster farreri B
Aster flaccidus B
Aster gracilentus A
Aster heterochaeta B
Aster himalaicus B
Aster kantoensis B 3
Aster laevis B
Aster lateriflorus B
Aster likiangensis J
Aster linariifolius B
Aster linosyris ! L
Aster maritimus A 3
Aster mongolicus B
Aster nemoralis B
Aster nepaulensis B
Aster novae-angliae B
Aster oblongifolius 'October Skies ' B
Aster ptarmicoides 'Summer Snow' B
Aster Purple Dome' B
Aster sibiricus B
Aster sikkimmensis B
Aster Snow Flurry' (Novi belgii) B
Aster souliei B
Aster sp. J
Aster stracheyi B
Aster tataricus J
Aster tongolensis B
Aster tongolensis 'Wartburg Star' B
Aster umbellatus B
Aster x frikartii B
Aster x frikartii 'Wunder von Stafa ' B
Aster yunnanensis B
Asteromoea mongolica A
Astilbe biternata A 3
Astilbe chinensis A 3 *
Astilbe chinensis 'Vision in Red' A 3 *
Astilbe chinensis var. davidii A 3 *
Astilbe chinensis var. pumila A 3 *
Astilbe Fanal' (x arendsii) A 3
Astilbe hybrid A *
Astilbe rubra A
Astilbe rubra 'Purple Candles' A
Astilbe rubra 'Valerie' A
Astilbe simplicifolia A
Astilbe sp. A 3 *
Astilbe thunbergii var. formosa A
Astilbe Willie Buchanan' A
Astilboides all species *
Astilboides tabularis A 3 *
Astracantha gummifera A 1 6 7
Astragalus alexandrii K 6
Astragalus all species *
Astragalus alpinus A 1 6 *
Astragalus alyssoides A 1 6 7 *
Astragalus canadensis A 1 6 7 *
Astragalus centralpinus A 6 7
Astragalus cicer K 6
Astragalus crassicarpus A 6 7
Astragalus danicus L 1 6 7 *
Astragalus frigidus A 1 6 7 *
Astragalus glycyphyllos A 1 6 7 *
Astragalus gummifera A 1 6 7
Astragalus lasiopetalus A 1 6 7 *
Astragalus membranaceus J 6 7 *
Astragalus mongholicus A 6 7
Astragalus neglectus A 6 7
Astragalus parryi *
Astragalus pelecinus A 6 7
Astragalus penduliflorus A 6 7
Astragalus propinquus J 6 7
Astragalus purshii A 1 6 7 *
Astragalus roemeri *
Astragalus sericeus A 1 6 7 *
Astragalus sinicus J 7
Astragalus sp. A 1 6 7 *
Astragalus suzgatus A 1 6 7
Astragalus whitneyi A 1 6 7 *
Astrantia carniolica var. rubra ! B 2
Astrantia major 'Alba' ! H 2
Astrantia major 'Lars ' ! H 2
Astrantia major 'Roma' ! H 2
Astrantia major 'Rubra' ! H 2
Astrantia major 'Ruby Cloud' ! H 2
Astrantia major 'Ruby Wedding' ! H 2
Astrantia major 'Star of Billion' ! H 2
Astrantia major 'Sunningdale Variegated' ! H 2
Astrantia major 'Variegata' ! H 2
Astrantia major 'White Star' ! H 2
Astrantia major subsp. carnolica ! H 2
Astrantia major subsp. involucrata 'Shaggy' ! H 2
Astrantia major var. rosea ! H 2
Astrantia maxima ! H 2
Astrantia maxima 'Alba' ! H 2
Astrantia sp. ! H 2
Asyneuma limonifolium L
Athamanta Denver Lace' ?
Athamanta turbith A
Athamanta turbith subsp. haynaldii A
Athyrium filix-femina 'Victoriae' A *
Athyrium niponicum A *
Atragene ochotensis D 9
Atraphaxis sp. L
Atriplex 'Red Flash' A
Atriplex hortensis A
Atriplex hortensis var. rubra A
Atropa belladonna L 4 7
Aubrieta Blue Cascade' (Cascade Series) A
Aubrieta canescens A
Aubrieta deltoidea A
Aubrieta deltoidea 'Nana Variegata' A
Aubrieta gracilis K
Aubrieta intermedia A 3
Aubrieta kotschyi A 3
Aubrieta macedonica A
Aubrieta most species A
Aubrieta parviflora A 3
Aubrieta pinardii A
Aubrieta scardica A
Aubrieta sp. A
Aureolaria virginica ! G
Aurinia corymbosa A
Aurinia saxatilis A
Aurinia saxatilis 'Carpet of Gold' A
Aurinia saxatilis 'Citrina ' A
Aurinia saxatilis 'Compacta' A
Aurinia saxatils 'Citrinum' A
Avenella flexuosa A
Azalea Boudoir' A *
Azalea Ghent hybrid A *
Azalea kiusianum 'Komo Kulshan' A *
Azalea Mollis hybrid A *
Azalea Phyllis Moore' A *
Azalea Sandra Hinton' A *
Azalea sp. A *
Baccharis magellanica K
Baileya multiradiata A
Ballota acetabulosa A
Ballota pseudodictamnus A
Balsamorhiza sagittata J
Banksia ericifolia J *
Baptisia 'Solar Flare' A 7 *
Baptisia 'Vanilla Cream' A 7 *
Baptisia 'Vanilla Cream' A 7 *
Baptisia alba A 7 *
Baptisia australis A 7 *
Baptisia australis 'Blueberry Sundae' A 7 *
Baptisia Blueberry Sundae' A 7 *
Baptisia Dutch Chocolate' A 7 *
Baptisia hybrid A 7 *
Baptisia lactea A 7 *
Baptisia Lemon Meringue' A 7 *
Baptisia leucantha G 7 *
Baptisia leucophaea G 7 *
Baptisia perfoliata J *
Baptisia Prairieblues Series A 7 *
Baptisia sp. A 7 *
Baptisia tinctoria A 6 7 *
Baptisia Twilite' A 7 *
Baptisia variicolor 'Twilite'(Pairieblues Series) A 7 *
Baptisia x variicolor 'Twilite' A 7 *
Barbarea rupicola A
Barnardia japonica A
Barnardia numidica A
Bartsia alpina E
Begonia boliviensis A 3
Begonia grandis A
Begonia grandis 'Alba' A
Begonia grandis ssp. sinensis A
Begonia grandis subsp. evansiana A
Begonia sp. A
Begonia sutherlandii A 3
Begonia x albopicta A
Belamcanda chinensis A 3 *
Belamcanda sp. A
Bellevalia forniculata J
Bellevalia hyacinthoides J *
Bellevalia paradoxa J
Bellevalia pycnantha J
Bellevalia species ?
Bellevalia trifoliata H
Bellis perennis A
Bellis sp. A
Bellium bellidioides A
Berberis aquifolium ]X H 8 *
Berberis hybrid G 8 *
Berberis koreana F 8 *
Berberis Red Tears' J 8 *
Berberis thunbergii G 8 *
Berberis thunbergii f. atropupurea 'Gold Ring' G 8 *
Berberis thunbergii 'Aurea ' G 8 *
Berberis thunbergii f. atropurpurea 'Rose Glow' G 8 *
Berberis vulgaris K *
Bergenia cordifolia A
Bergenia cordifolia 'Purpurea ' A
Berkheya purpurea A
Berkheya purpurea 'Zulu Warrior' A
Berlandiera lyrata A
Besseya bullii G 3
Betonica abchasica A
Betonica officinalis A
Betonica officinalis 'Hummelo' A
Betula alba A 3 *
Betula albosinensis G 3
Betula apoiensis J
Betula ermanii A 3 *
Betula glandulosa G 4
Betula jacquemontii G 3
Betula lenta L
Betula lenta L
Betula michauxii G
Betula middendorffii J 3
Betula ovalifolia G
Betula pendula J
Betula pendula ?Golden Cloud? J
Betula pendula 'Golden Cloud' J
Betula pendula ssp. pendula 'Golden Cloud' J
Betula pubescens A 3
Betula pumila L
Betula sp. J
Betula utilis var. jacquemontii A 3
Bidens ferulifolia A
Bidens ferulifolia 'Golden Eye' A
Bidens lutea ?
Bidens pilosa A
Bidens polylepis J
Bidens sp. A
Biscutella laevigata A
Biserrula pelecinus A 6 7
Bituminaria bituminosa A
Bituminaria morisiana A 6
Blechnum penna-marina A *
Blephilia ciliata F
Bletilla striata A *
Blumenbachia hieronymi A
Boechera koehleri A
Boehmeria japonica A
Boehmeria nivea A
Boehmeria tricuspis A
Boenninghausenia albiflora A
Boerhavia orientalis L
Boltonia asteroides A 3
Boltonia asteroides var. latisquama A 3
Boltonia asteroides var. latisquama 'Jim Crockett' A 3
Boltonia asteroides var. latisquama 'Nana' A 3
Boltonia lautureana ?
Bomarea formosissima A 1 6 7 *
Borago officinalis A 1
Borago officinalis 'Alba' A 1
Borago officinalis 'Bianca' A 1
Borago pygmaea A
Bornmuellera tymphaea A
Bouteloua curtipendula A
Bouteloua gracilis A
Bouteloua gracilis 'Bad River' ]X A
Boykinia aconitifolia A 3
Boykinia elata B
Boykinia jamesii L 3
Boykinia major ! L
Boykinia occidentalis B
Boykinia rotundifolia B
Boykinia sp. B
Brachyelytrum sp. J
Brachyscome iberidifolia A 3
Brachyscome sp. A
Bracteantha bracteata A
Brassica all species A
Brassica jordanoffii A
Brassica nivalis A
Brassica oleracea 'Redbor' A
Brassica oleracea var. acephala A
Brassica oleracea var. alboglabra A
Brassica repanda A
Brassica sp. A
Braya alpina A 3 7 *
Brimeura amethystina H
Brimeura amethystina 'Alba' H
Briza maxima A
Briza media A
Briza minor A
Brodiaea elegans ! A
Brodiaea howellii K
Brodiaea laxa A
Brodiaea pulchella F
Brodiaea Queen Fabiola' B
Bromus kalmii A
Browallia americana A 3
Browallia sp. A 3
Browallia speciosa A 3
Brugmansia hybrid A
Brugmansia sp. A
Brunnera macrophylla A
Bryonia alba G
Bryonia dioica G
Buddleja davidii A 3 *
Buddleja davidii 'Black Knight' A 3 *
Buddleja davidii 'Mongo' A 3 *
Buddleja japonica A 3 *
Buddleja sp. A 3 *
Buddleja x weyeriana 'Honeycombe' A *
Bukiniczia cabulica A
Bulbine bulbosa A
Bulbine caulescens A
Bulbine frutescens A
Bulbine semibarbata A 2
Bulbocodium vernum ! D *
Bunias orientalis A
Bunium bulbocastanum A
Buphthalmum salicifolium A
Bupleurum aureum A
Bupleurum falcatum A
Bupleurum fruticosum A 3
Bupleurum griffithii J 3
Bupleurum longifolium ! D
Bupleurum lophocarpum A
Bupleurum ranunculoides A 2
Bupleurum rotundifolium ! A 2
Bupleurum rotundifolium 'Green Gold' ! A 2
Bupleurum salicifolium A
Bupleurum sp. A 1 3
Burchardia umbellata A
Buxus sempervirens 'Aurea Pendula' J
Cacalia alliariae ?
Cacalia auriculata A 3
Caccinia sp. ?
Caccinia strigosa A
Caesalpinia lutea A 6 7
Caesalpinia pulcherrima A
Caiophora prietea A
Calamagrostis arundinacea A 3
Calamagrostis brachytricha A
Calamintha grandiflora E
Calamintha nepeta B
Calamintha sp. ?
Calandrinia grandiflora A
Calandrinia sp. K *
Calandrinia umbellata A
Calanthe discolor *
Calanthe tricarinata A 2 *
Calceolaria andina B 3 *
Calceolaria biflora A
Calceolaria biflora 'Goldcrest' A
Calceolaria chelidonioides A 3
Calceolaria falklandica A
Calceolaria fothergillii ! A
Calceolaria Gold Cup' A
Calceolaria hirsuta A
Calceolaria mexicana A
Calceolaria polyrhiza A
Calceolaria sp. A 3
Calceolaria tripartita A
Calendula officinalis A
Calendula officinalis 'Indian Prince' A
Calendula officinalis 'Neon' A
Calendula officinalis 'Pacific Beauty' A
Calendula officinalis 'Radio' A
Calendula sp. A 2
Calibanus hookeri A *
Calla New Armour' A
Calla palustris ! E *
Calla pink Gem' A
Calla sp. A
Callianthemum anemonoides ! G
Callianthemum coriandrifolium L
Callianthemum kernerianum ! F
Callicarpa bodinieri A
Callicarpa bodinieri var. giraldii A
Callicarpa bodinieri var. giraldii 'Profusion' A
Callicarpa dichotoma L
Callicarpa dichotoma 'Issai' L
Callicarpa dichotoma f. albifructa L
Callicarpa japonica A
Callicarpa japonica 'Leucocarpa' A *
Callicarpa sp. ? 8
Callirhoe digitata A 1
Callirhoe involucrata A
Callirhoe triangulata A 6
Callistemon salignus A
Callistemon viminalis A
Callistephus chinensis A
Callistephus chinensis 'Hulk' A
Callistephus chinensis 'Pavlova Dark Blue' A
Calluna vulgaris A 3
Calluna vulgaris 'Dainty Bess' A 3
Calluna vulgaris 'White Lawn' A 3
Calochortus amoenus *
Calochortus barbatus G *
Calochortus macrocarpus G *
Calochortus nuttallii K *
Calochortus sp. *
Calochortus tolmiei J
Calopogon tuberosus *
Caltha biflora ! A *
Caltha leptosepala ! A *
Caltha leptosepala subsp. howellii ! A *
Caltha palustris ! L 5 *
Calycanthus 'Aphrodite' A
Calycanthus chinensis A
Calycanthus floridus A
Calycanthus floridus 'Purpurea ' A
Calydorea sp. A 4
Calylophus hartwegii subsp. fendleri A
Calylophus serrulatus L
Camassia cusickii F
Camassia cusickii 'Zwanenburg' F
Camassia leichtlinii F
Camassia leichtlinii subsp. leichtlinii F
Camassia leichtlinii subsp. suksdorfii 'Alba' F
Camassia leichtlinii subsp. suksdorfii Coerulea Group F
Camassia quamash F
Camassia quamash 'Blue Melody' F
Camassia quamash subsp. azurea G
Camassia quamash subsp. quamash F
Camassia scilloides G
Camassia sp. G
Camellia oleifera 'Plain Jane' A 6 7 *
Camellia sp. A 6 7
Campanula alata A
Campanula alliariifolia A
Campanula alliariifolia subsp. alliariifolia A
Campanula alpina A
Campanula americana G 3 *
Campanula argaea A
Campanula argyrotricha A 3
Campanula armena A
Campanula aucheri A
Campanula autraniana L
Campanula barbata A
Campanula barbata 'Darkest of All' A
Campanula barbata var. alba A
Campanula bellidifolia A
Campanula betulifolia A
Campanula bononiensis ?
Campanula calaminthifolia L
Campanula carnica A
Campanula carpatica A
Campanula carpatica 'Rapido White' A
Campanula carpatica 'Blue Clips' A
Campanula carpatica 'Glokkentappich Hellblau' A
Campanula carpatica 'Hannah' A
Campanula carpatica 'Rapid Blue' A
Campanula carpatica 'White Clips' A
Campanula carpatica f. alba A
Campanula carpatica f. alba 'Weisse Clips' A
Campanula carpatica var. turbinata A
Campanula carpatica var. turbinata f. alba E
Campanula cashmeriana A 3
Campanula celsii A
Campanula cenisia A
Campanula cephallenica A
Campanula cephalotes A 3
Campanula cervicaria A
Campanula cespitosa A
Campanula chamissonis L 3
Campanula choruhensis A
Campanula ciliata F
Campanula cochleariifolia A
Campanula collina A
Campanula cordifolia A
Campanula corymbosa A
Campanula cymbalaria A 3
Campanula dasyantha L 3
Campanula elegans A 3
Campanula fenestrellata subsp. istriaca A
Campanula formanekiana A
Campanula fragilis A
Campanula garganica A
Campanula garganica subsp. cephallenica A
Campanula glomerata A 3
Campanula glomerata 'Superba' A 3
Campanula glomerata var. acaulis A 3
Campanula glomerata var. alba A 3
Campanula grandis A
Campanula grossekii A
Campanula grossheimii A 3
Campanula hoffmannii A
Campanula hybrid A
Campanula incurva A 3
Campanula istriaca A
Campanula kemulariae A
Campanula Kent Belle' E
Campanula kirpicznikovii A
Campanula kolenatiana A
Campanula koreana A
Campanula lactiflora A
Campanula lactiflora 'Alba' A
Campanula latifolia A 3
Campanula latifolia 'Brantwood' A 3
Campanula latifolia f. alba A 3
Campanula latifolia var. macrantha A 3
Campanula latifolia var. macrantha 'Alba' A 3
Campanula latifolia var. macrantha 'Superba' A 3
Campanula latiloba A
Campanula ledebouriana A
Campanula lingulata A
Campanula linifolia A
Campanula lyrata L 3
Campanula macrantha A 3
Campanula makaschvilii A
Campanula medium A
Campanula medium 'Flore Pleno' A
Campanula medium var. calycanthema A
Campanula moesiaca A
Campanula ochroleuca A
Campanula orphanidea A
Campanula patula B
Campanula patula subsp. abietina B
Campanula pelviformis A
Campanula pendula A
Campanula peregrina A
Campanula persicifolia A
Campanula persicifolia 'Alba Coronata' A
Campanula persicifolia 'Flore Pleno' A
Campanula persicifolia 'Nitida Alba' A
Campanula persicifolia 'Telham Beauty' A
Campanula persicifolia f. alba A
Campanula persicifolia var. planiflora A
Campanula pilosa L 3
Campanula portenschlagiana A 3
Campanula poscharskyana B
Campanula primulifolia A
Campanula pulla A 3
Campanula punctata A 3
Campanula punctata 'Rubra' A 3
Campanula punctata f. albiflora 'Alba' A 3
Campanula punctata f. albiflora 'Nana Alba' A 3
Campanula punctata var. hondoensis A 3
Campanula pyramidalis A
Campanula pyramidalisf. alba A
Campanula raddeana A
Campanula radicosa A 3
Campanula raineri G
Campanula ramosissima A 3
Campanula rapunculoides A 3 *
Campanula rapunculoides subsp. rapunculoides A 3 *
Campanula rhomboidalis A
Campanula rigidipila A 3
Campanula rotundifolia A
Campanula rotundifolia 'Mingan' A
Campanula Samantha' A
Campanula sarmatica A
Campanula sartorii A
Campanula saxifraga A
Campanula saxifraga ssp. aucheri A
Campanula scheuchzeri A
Campanula sibirica A
Campanula sp. L
Campanula sparsa ?
Campanula speciosa B
Campanula spicata A 3
Campanula Stansfieldii' A
Campanula stellata L
Campanula stevenii L
Campanula takesimana A 3
Campanula teucrioides A
Campanula thessala J
Campanula thyrsoides J
Campanula thyrsoidesssp. carniolica G
Campanula tommasiniana A
Campanula topaliana A
Campanula trachelium A
Campanula trachelium 'Bernice' A
Campanula tridentata A
Campanula uniflora A
Campanula verticillata L
Campanula vidalii A
Campanula waldsteiniana A
Campanula wanneri A
Campanula zangezura A
Campanula zoysii L *
Campsis radicans J *
Canna indica A 6 7 *
Canna paniculata A 6 7 *
Canna sp. A 6 7 *
Capnoides sempervirens ! A 3 *
Capsicum annuum A
Capsicum annuum 'Black Pearl' A
Capsicum annuum 'Explosive Ember' A
Capsicum annuum 'Gold Finger' A
Capsicum annuum var. annuum A
Capsicum chinense A
Capsicum frutescens A
Capsicum frutescens 'Purira' A
Capsicum sp. A 7
Caragana aurantiaca A 7
Caragana frutex A 7
Caragana pygmaea A 6 7 *
Cardiocrinum cordatum A *
Cardiocrinum cordatum var. glehnii H *
Cardiocrinum giganteum H *
Cardiocrinum giganteum var. yunnanense H *
Cardiocrinum sp. H *
Cardiospermum halicacabum A 3
Cardiospermum sp. A 7
Carduncellus monspeliensis A
Carduncellus pinnatus A
Carduus defloratus ?
Carduus glaucus A 2
Carex baccans A
Carex buchananii B
Carex buchananii 'Red Rooster' B
Carex comans A 3 *
Carex comans 'Bronze' A 3 *
Carex comans 'Frosted Curls ' A 3 *
Carex comans 'Frosted Curls' A 3
Carex cuprina A
Carex elata 'Aurea' A *
Carex elata 'Bowles Golden' A *
Carex flacca K
Carex flagellifera A
Carex flagellifera 'Bronze' A
Carex glauca K
Carex grayi A 3
Carex heleonastes G
Carex lupulina J
Carex lurida H
Carex Majken' K
Carex melanantha F
Carex melanocephala A 3
Carex muskingumensis A 3
Carex nigra E
Carex pendula D
Carex pseudocyperus D
Carex rosea H 7 8
Carex scandinavica L
Carex scaposa A 3
Carex schiedeana ? 3
Carex sp. J
Carex stellata ? 3
Carex viridula L
Carlina acanthifolia B
Carlina acaulis A 3
Carlina acaulis subsp. acaulis A 3
Carlina acaulis subsp. simplex A 3
Carlina caulescens A 3
Carlina corymbosa A
Carlina sp. ?
Carlina vulgaris D
Carpinus betulus C
Carya ovata L *
Caryopteris ? clandonensis 'Inoveris' Grand Bleu A
Caryopteris divaricata L
Caryopteris sp. L
Caryopteris x clandonensis A
Caryopteris x clandonensis 'Heavenly Blue' A
Caryopteris x clandonensis 'Kew Blue' A
Caryopteris x clandonensis 'Worchester Gold' A
Cassia covesii A 6 7
Cassia fasciculata J 6
Cassia hebecarpa A 6 7
Cassia marilandica J 6 7
Cassia sp. ? 6 7
Castanea americana G 7
Castilleja coccinea G
Castilleja miniata C *
Catalpa bignonioides A
Catalpa fargesii A
Catalpa sp. A
Catalpa speciosa A 7
Catananche caerulea A
Catananche caespitosa A
Caulophyllum thalictroides ! L 8 *
Cautleya spicata ! A
Ceanothus americanus L 6 7 *
Ceanothus arboreus 'Owlswood Blue' L 6 7
Ceanothus sp. L 6 7
Cedronella canariensis K
Cedrus deodara G
Celastrus scandens G
Celastrus sp. A *
Celmisia all species ! A *
Celmisia gracilenta A
Celmisia prorepens ! A
Celmisia traversii ! F
Celosia argentea A
Celosia argentea 'Flamingo Feather' A
Celosia argentea var. cristata (Plumosa Group) A
Celosia cristata 'Bombay Dark Red' A
Celosia hybrid A
Celosia New Look' A
Celosia plumosa A
Celosia sp. A
Celosia spicata A 3
Celosia trigyna A
Celsia acaulis A
Cenolophium denudatum J
Cenolophium sp. J
Centaurea americana A 2 6
Centaurea arpensis A
Centaurea atropurpurea A
Centaurea bella A
Centaurea cheiranthifolia A
Centaurea cheiranthifolia var. purpurascens A
Centaurea cyanus A
Centaurea cyanus 'Black Ball' A
Centaurea dealbata A
Centaurea drabifolia subsp. cappadocica A
Centaurea drabifolia subsp. drabifolia A
Centaurea fischeri A
Centaurea jacea A
Centaurea John Coutts' A
Centaurea macedonica ?
Centaurea macrocephala A
Centaurea melitensis A
Centaurea mixta A
Centaurea montana A
Centaurea montana 'Gold Bullion' A
Centaurea nigra A
Centaurea orientalis A
Centaurea phrygia A
Centaurea pindicola A
Centaurea pulcherrima A
Centaurea pulchra A
Centaurea rothrockii A 2
Centaurea rupestris A 2
Centaurea simplicicaulis A
Centaurea stenolepis A 2
Centaurea tchihatchewii A
Centaurea triumfettii A
Centaurea uniflora A
Centaurea uniflora subsp. nervosa A
Centaurea urvillei subsp. hayekiana A
Centaurium chloodes J
Centaurium confertum J
Centaurium erythraea A
Centaurium scilloides A 3
Centella asiatica A *
Centranthus ruber A
Centranthus ruber v .coccineus A
Centranthus sp A
Cephalanthera damasonium A *
Cephalanthus occidentalis A 3
Cephalaria alpina A
Cephalaria alpina 'Nana' F
Cephalaria gigantea B
Cephalaria leucantha B
Cephalaria tatarica B
Cephalaria tchihatchewii A 3
Cephalaria uralensis A
Cephalophora aromatica N *
Cerastium all species A
Cerastium alpinum B
Cerastium alpinum var. lanatum A 3
Cerastium banaticum A
Cerastium candidissimum A 3
Cerastium sp. A 3
Cerastium tomentosum A 3
Ceratocapnos heterocarpa ! E
Ceratostigma plumbaginoides A
Ceratotheca triloba A
Cercidiphyllum japonicum G
Cercis canadensis A 6 7 *
Cercis canadensis f. alba A 6 7 *
Cercis siliquastrum H *
Cercocarpus montanus G
Cerinthe glabra B
Cerinthe major A
Cerinthe major subsp. purpurascens A
Cestrum elegans A 3
Chaenomeles japonica A
Chaenomeles speciosa G
Chaenorhinum glareosum A
Chaenorhinum origanifolium A 3
Chaenorhinum sp. ?
Chaerophyllum aureum ! J
Chaerophyllum hirsutum `Roseum` ! L
Chaerophyllum hirsutum 'Album' ! L
Chaerophyllum maculatum ?
Chaerophyllum sp. ! A
Chamaebatiaria millefolium B
Chamaecrista fasciculata J 6
Chamaecyparis lawsoniana H *
Chamaecyparis pisifera A
Chamaecytisus austriacus A 1 3 6 7
Chamaecytisus hirsutus A 1 6 7
Chamaecytisus purpureus A 1 6 7
Chamaecytisus pygmaeus A 1 6 7
Chamaecytisus ratisbonensis A 1 6 7
Chamaedaphne calyculata A 3 *
Chamaenerion angustifolium ?
Chamerion crissum A
Chamerion fleischeri L
Chamerion hirsutum A
Chasmanthium latifolium G
Chasmanthium latifolium 'River Mist' G
Cheilanthes argentea A *
Cheilanthes lanosa A *
Cheiranthus all species A
Cheiranthus allionii A
Cheiranthus sp. A
Cheiranthus x allionii A
Chelidonium japonicum A
Chelidonium majus ! A *
Chelidonium majus 'Flore Pleno' ! E *
Chelone albida F *
Chelone glabra A 3
Chelone lyonii B
Chelone lyonii 'Hot Lips' B
Chelone obliqua A
Chelone obliqua var. alba A
Chelone sp. B *
Chelonopsis yagiharana A
Chenopodium nitidum L
Chiastophyllum oppositifolium A 3
Chilopsis linearis ! A 2
Chimaphila menziesii A *
Chimaphila umbellata A *
Chionanthus retusus C 7
Chionanthus virginicus C 7
Chionodoxa forbesii L *
Chionodoxa Lilacina' L *
Chionodoxa luciliae L *
Chondrosum gracile A
Chorispora bungeana A *
Chrysanthemum alpinum B
Chrysanthemum coccineum A
Chrysanthemum coccineum 'Robinson Mix' A
Chrysanthemum coronarium A
Chrysanthemum leontopodium A
Chrysanthemum macrophyllum ! A
Chrysanthemum minimum A
Chrysanthemum multicaule A
Chrysanthemum multicaule 'Moonlight' A
Chrysanthemum Sunny Side Up' A
Chrysanthemum tianschanicum A
Chrysanthemum weyrichii A
Chrysanthemum x superbum A
Chrysopsis falcata J
Chrysopsis mariana G
Chrysopsis villosa A
Chrysosplenium macrostemon var. shiobarense ! H *
Chrysothamnus nauseosus A
Cicerbita alpina A
Cimicifuga all species *
Cimicifuga americana E *
Cimicifuga dahurica E
Cimicifuga europaea ! C *
Cimicifuga foetida ! C *
Cimicifuga japonica C *
Cimicifuga racemosa ! C *
Cimicifuga ramosa B *
Cimicifuga rubifolia C *
Cimicifuga simplex C *
Cimicifuga sp. ! G *
Cirsium acaule B
Cirsium bertolonii K
Cirsium canum A
Cirsium diacantha A
Cirsium discolor J
Cirsium edule v. macounii A
Cirsium eriophorum A
Cirsium esculentum A
Cirsium hookerianum A
Cirsium japonicum K
Cirsium muticum A *
Cirsium proteanum ? *
Cirsium rivulare A
Cirsium rivulare 'Atropurpureum' A
Cirsium scariosum B
Cirsium spinosissimum K
Cirsium spinosissimum subsp. berthelonii K
Cirsium x eristhaloides L
Cistanthe grandiflora J
Cistus albanicus ! A
Cistus incanus A
Cistus sintenisii ! A
Cistus sp. A 6 *
Citrus trifoliata ! J
Cladanthus arabicus A 2
Cladanthus arabicus 'Golden Crown' A 2
Cladrastis kentukea G 6 *
Cladrastis lutea F 6 *
Clarkia amoena A
Clarkia pulchella A
Clarkia rubicunda subsp. blasdalei A
Clarkia unguiculata A
Claytonia caroliniana ! K *
Claytonia lanceolata ! K *
Claytonia megarhiza ! L *
Claytonia virginica ! C *
Clematis integrifolia from Lake Baikal L 9
Clematis 'Alionushka' C
Clematis 'Bluebird' D
Clematis 'Campanile' G 9
Clematis 'Golden Tiara' B
Clematis 'Haizawa' A 9
Clematis 'Kermesina' E
Clematis 'Mienie Belle' E 9 *
Clematis 'Omoshiro' ?
Clematis 'Petit Faucon? A 9
Clematis 'Rain Dance' L 9
Clematis 'Retrousse' ?
Clematis 'Senju' A
Clematis 'Spectrum' D 9
Clematis 'Twinkle' A 9
Clematis [Petit Faucon] ='Evisix' ? 9
Clematis Abundance' E 9
Clematis addisonii A
Clematis aethusifolia F 9
Clematis Alba Chirifu' A 4 9 *
Clematis Alba Luxurians' E 9
Clematis albicoma A
Clematis Alionushka' A 9
Clematis alpina D 9
Clematis alpina 'Albiflora' D 9
Clematis alpina 'Blue Dancer' D 9
Clematis alpina 'Columbine' D 9
Clematis alpina 'Constance' D 9
Clematis alpina 'Helsingborg' D 9
Clematis alpina 'Jacqueline du Pre' D 9
Clematis alpina 'Jan Lindmark' A 9
Clematis alpina 'Martha Rivers' D 9
Clematis alpina 'Odorata' D 9
Clematis alpina 'Pamela Jackman' D 9
Clematis alpina 'Pink Flamingo' D 9
Clematis alpina 'Rubra' D 9
Clematis alpina 'Ruby' D 9
Clematis alpina 'Stolwijk Gold' D
Clematis alpina subsp. sibirica D 9
Clematis alpina subsp. sibirica x ochotensis D 9
Clematis alpina var. ochotensis D 9
Clematis Amber Wheels' A
Clematis angustifolia ? 9
Clematis Arabella' E 9
Clematis Asao' L 9
Clematis Bees' Jubilee' L 9
Clematis Belle of Woking' L 9
Clematis Bill MacKenzie' F 9
Clematis Blue Belle' L 9
Clematis Blue Bird' B 9
Clematis Blue Eclipse' J 9
Clematis Blue Moon' L 9
Clematis Buckland Beauty' E 9 *
Clematis Burford Bell' C 9
Clematis Burford Bell' x crispa H
Clematis campaniflora B
Clematis Candy Cane' L 9
Clematis chiisanensis L 9
Clematis Clair de Lune' L 9
Clematis columbiana A 3
Clematis columbiana var. tenuiloba A 3
Clematis columbiana var. tenuiloba 'Ylva' A 3
Clematis crispa H
Clematis crispa 'Blue Jasmine' H
Clematis crispa x integrifolia H
Clematis davidiana G 9
Clematis Dawn' L 9
Clematis Doctor Ruppel' L 9
Clematis douglasii ! J 7 9
Clematis Everett' L 9
Clematis Evipo099 ?
Clematis fargesii var. soulei J 9
Clematis Fireworks' L 9
Clematis flammula C 9
Clematis Fleuri' (Boulevard series) ? 9
Clematis florida L 9
Clematis florida 'Pistachio' L 9
Clematis Frances Rivis' D 9
Clematis fremontii ! G 9
Clematis fremontii x integrifolia ! G 9
Clematis Fudo' E 9
Clematis fusca L 9
Clematis fusca var. violacea L 9
Clematis Garnet' ?
Clematis Gazelle' A 9
Clematis Gipsy Queen' G 9
Clematis glauca L 9
Clematis glaucophylla L 9
Clematis glaucophylla 'Pan Handler' L 9
Clematis Guernsey Cream' L 9
Clematis Hagley Hybrid' L 9
Clematis Harlequin' L 9
Clematis Henryi' L 9
Clematis heracleifolia G 9
Clematis heracleifolia 'Cassandra' A 9
Clematis heracleifolia 'Chantilly' G 9
Clematis heracleifolia 'China Purple' G 9
Clematis heracleifolia 'Clarissa' G 9
Clematis heracleifolia 'New Love' G 9
Clematis heracleifolia 'Wyevale' G 9
Clematis heracleifolia var. davidiana G 9
Clematis heracleifolia var. urticifolia G 9
Clematis hexapetala L 9
Clematis hirsutissima L
Clematis hirsutissima v. scottii ! L
Clematis hirsutissima var. scottii L
Clematis Hyde Hall' L 9
Clematis Hythe Egret' L 9
Clematis ianthina L 9
Clematis Ice Blue' L 9
Clematis integrifolia A 9
Clematis integrifolia 'Alba' A 9
Clematis integrifolia 'Baby White' A 9
Clematis integrifolia 'Fascination' A 9
Clematis integrifolia 'Gazelle' A 9
Clematis integrifolia 'Hendersonii ' A 9
Clematis integrifolia 'Lake Baikal' L 9
Clematis integrifolia 'Mongolian Bells' A 9
Clematis integrifolia 'Olgae' A 9
Clematis integrifolia 'Pamiat Serdtsa' A
Clematis integrifolia 'Pangbourne Pink' A 9
Clematis integrifolia 'Purpurea' A 9
Clematis integrifolia 'Rosea' A 9
Clematis integrifolia 'Swedish Bells' A 9
Clematis integrifolia 'Twinkle' A 9
Clematis intricata L 9
Clematis ispahanica J 4 9 *
Clematis jackmanii G 9
Clematis Jan Fopma' L 9
Clematis japonica L 9
Clematis koreana J
Clematis Koreana 'Fragrans' J
Clematis ladakhiana A 2
Clematis lasiandra A
Clematis lasiantha G
Clematis Liberation' L 9
Clematis ligusticifolia H 7 9
Clematis Little Nell' E 9
Clematis Lunar Lass' L 9
Clematis macropetala A 9
Clematis macropetala 'Alba' A 9
Clematis macropetala 'Blue Bird' A 9
Clematis macropetala 'Lagoon' A 9
Clematis macropetala 'Maidwell Hall' A 9
Clematis macropetala 'Markham's Pink' A 9
Clematis Madame Julia Correvon' E 9
Clematis mandschurica E 9
Clematis Margot Koster' L 9
Clematis Miss Bateman' L 9
Clematis montana A
Clematis montana var. montana A
Clematis Moonlight' L 9
Clematis morefieldii L
Clematis most species *
Clematis Mrs Harvey' L 9
Clematis Mrs Robert Brydon' J
Clematis napaulensis F 9
Clematis Nelly Moser' L 9
Clematis occidentalis D 9
Clematis occidentalis 'Big Horns' C 9
Clematis ochotensis J 9
Clematis ochotensis x alpina J 9
Clematis ochroleuca J
Clematis orientalis A 3 9
Clematis orientalis 'Annemieke' B 9
Clematis Pagoda' L 9
Clematis paniculata C
Clematis patens x 'Nara' ?
Clematis Paul Farges' L 9
Clematis Perle d'Azur' L 9
Clematis Petit Faucon' ? 9
Clematis pitcheri C 4 9
Clematis Polish Spirit' E 9
Clematis potaninii J 9
Clematis potaninii var. fargesii J 9
Clematis Prairie Traveller's Joy' F 9
Clematis Prince Charles' ?
Clematis Princess Diana' E 9 *
Clematis Princess Kate' L 9
Clematis Princess Red' H
Clematis Proteus' L 9
Clematis Radar Love' L 9
Clematis Ramona' L 9
Clematis recta ! A 2 *
Clematis recta 'Purpurea' ! A 2 *
Clematis recta 'Serious Black' ! A 2 *
Clematis rehderiana C 9
Clematis repens A
Clematis reticulata ?
Clematis Roguchi' A 9
Clematis Rooguchi' L 9
Clematis Rosy O'Grady' F 9
Clematis Rouge Cardinal' L 9
Clematis Ruby' D 9
Clematis scottii L
Clematis serratifolia ! J 7 9 *
Clematis serratifolia 'Kugotia' ! J 7 9 *
Clematis sibirica G
Clematis songarica L
Clematis Sonnette' A 9
Clematis sp. L
Clematis sp. L
Clematis speciosa ! A 9
Clematis stans G 9
Clematis Summer Snow' L 9
Clematis Swedish Bells' A 9
Clematis Sweet Summer Love' C 9 *
Clematis tangutica B 9
Clematis tangutica 'Radar Love' B 9
Clematis tenuiloba A 3
Clematis terniflora A 9
Clematis terniflora v. manshurica E 9
Clematis terniflora var. mandshurica E 9
Clematis texensis E 9 *
Clematis texensis 'Etoile Rose' E 9 *
Clematis texensis 'Gravetye Beauty' E 9 *
Clematis texensis 'Maxima' E 9 *
Clematis texensis 'Queen Maxima' E 9 *
Clematis texensis 'Radiance' E 9 *
Clematis texensis 'Wellmax' J 9
Clematis texensis 'Wyevale' E 9 *
Clematis texensis x pitcherii ? 9 *
Clematis The President' L 9
Clematis tibetana J 9
Clematis tibetana subsp. vernayi 'Orange Peel' J 9
Clematis tibetana var. vernayi J 9
Clematis Titipu' A 9
Clematis tubulosa 'Wyevale' J 9
Clematis urophylla ?
Clematis veitchiana C 9
Clematis Venosa Violacea' E 9
Clematis versicolor L 9
Clematis Victoria' G 9
Clematis Ville de Lyon' L 9
Clematis vinacea A
Clematis viorna A 9
Clematis viorna 'Boone County' A 9
Clematis viorna 'Buckland Beauty' A 9
Clematis viorna 'Garnet' A 9
Clematis viorna hybrid A 9
Clematis virginiana A 3 4
Clematis vitalba E 9
Clematis viticella E 9
Clematis viticella 'Abundance' E 9
Clematis viticella 'Alba Luxurians' E 9
Clematis viticella 'Betty Corning' E 9
Clematis viticella 'Carmencita' E 9
Clematis viticella 'Etoile Violette' E 9
Clematis viticella 'Hagelby Pink' E 9
Clematis viticella 'Hagelby White' E 9
Clematis viticella 'Kermesina' E 9
Clematis viticella 'Minuet' E 9
Clematis viticella 'Venosa Violacea' E 9
Clematis viticella 'Zolibe' E 9
Clematis viticella hybrid E 9
Clematis viticella subsp. campaniflora E 9
Clematis White Swan' B 9
Clematis Willy' D 9
Clematis x 'Fuji Kahori' ?
Clematis x cartmanii A
Clematis x cylindrica 'Millie' L 9
Clematis x diversifolia 'Rouguchi' A
Clematis x durandii ? 9
Clematis x eriostemon C 9
Clematis x eriostemon 'Blue Boy' C 9
Clematis x eriostemon 'Hendersonii ' C 9
Clematis x hybrida sieboldii 'Ramona ' L 9
Clematis x jouiniana J
Clematis x jouiniana 'Praecox' J
Clematis x Toki ?
Clematis Yukikomachi' L 9
Clematopsis scabiosifolia A
Cleome chilensis A *
Cleome dodecandra A
Cleome hassleriana A 3
Cleome hassleriana 'Cherry Queen' A *
Cleome hassleriana 'Helen Campbell' A 3
Cleome hassleriana 'Purple Queen' A *
Cleome hassleriana 'Rose Queen' A 3
Cleome houtteana A 3
Cleome hybrid A 3 *
Cleome obliqua A 3 *
Cleome rutidosperma A 4 *
Cleome sp. A 3 *
Cleome spinosa A *
Clethra acuminata A *
Clethra alnifolia G 3
Clethra alnifolia 'Ruby Spice' G 3
Clethra barbinervis A
Clianthus formosus A 2 6 7
Clinopodium nepeta B
Clinopodium nepeta 'Marvelette Blue' A 3
Clinopodium thymifolium D 3 4
Clintonia borealis ! L 8 *
Clintonia uniflora ! L 8 *
Clitoria ternatea A 6 7
Clivia caulescens ! A *
Cnicus benedictus A
Cnidium dubium A 3
Cobaea scandens A
Codonopsis all species !
Codonopsis bhutanica B 3
Codonopsis cardiophylla F *
Codonopsis clematidea ! A 3
Codonopsis forrestii A
Codonopsis grey-wilsonii A
Codonopsis lanceolata B 3
Codonopsis obtusa ! A 3
Codonopsis ovata A
Codonopsis pilosa A 3
Codonopsis pilosula A
Codonopsis rotundifolia A 3
Codonopsis sp. A
Codonopsis tangshen B 3
Codonopsis tubulosa A 3
Codonopsis ussuriensis B 3
Colchicum arenarium ! L *
Colchicum autumnale ! L *
Colchicum bivonae ! L *
Colchicum diampolis ! L *
Colchicum hungaricum ! L *
Colchicum kurdicum ! L *
Colchicum sp. ! L *
Colchicum speciosum ! L *
Colchicum szovitsii ! L 4 *
Coleostephus multicaulis A
Coleus scutellarioides 'Palisandra' A
Collomia biflora A
Collomia coccinea A
Collomia debilis A 5
Collomia grandiflora F
Colutea arborescens A 7
Colutea orientalis A 6 7
Colutea x media A 2 6
Coluteocarpus vesicaria A
Coluteocarpus vesicaria subsp. vesicaria A 2
Commelina coelestis A 2
Commelina dianthifolia A
Commelina tuberosa A *
Compositae sp. ?
Comptonia peregrina ! A 6 7 *
Conoclinium coelestinum J
Conopholis americana *
Conopodium denudatum A
Conopodium majus A
Consolida ajacis A
Consolida ambigua A 1
Consolida cultivar A 1
Consolida regalis A
Consolida sp. A
Convallaria majalis A 2 8
Convallaria majalis 'Albostriata ' A 2 8
Convallaria majalis 'Rubra' L 2 8
Convallaria majalis 'Variegata' A 2 8
Convolvulus sp. A 6 7
Convolvulus assyricus A 7
Convolvulus nitidus A 7
Convolvulus tricolor A 7
Conyza nana A
Coprosma petriei H
Coptis groenlandica ! K *
Coptis trifolia ! K *
Coptis trifolia subsp. groenlandica ! K *
Corallodiscus sp. ?
Coreopsis 'Red Satin' ?
Coreopsis 'Cosmic Eye' A
Coreopsis 'Sterntaler' A
Coreopsis auriculata 'Nana' A
Coreopsis auriculata 'Zamphir' A
Coreopsis grandiflora A
Coreopsis grandiflora 'Double the Sun' A
Coreopsis grandiflora 'Early Sunrise' A
Coreopsis hybrid K
Coreopsis hybrida K
Coreopsis lanceolata A
Coreopsis leavenworthii A 3
Coreopsis rosea F
Coreopsis rosea 'American Dream' F
Coreopsis sp. K
Coreopsis tinctoria A 3
Coreopsis tripteris B 3
Coreopsis verticillata K
Coreopsis verticillata 'Moonbeam' K
Coreopsis x hybrida K
Coreopsis x hybrida 'Incredible Tall' A
Coriandrum sativum A 1
Coriandrum sativum 'Calypso' A
Cornus alternifolia ! L *
Cornus canadensis G 5 8 *
Cornus capitata ! L *
Cornus florida H 2 8 *
Cornus florida 'Rainbow' H 2 8 *
Cornus kousa H 8 *
Cornus kousa 'Milky Way' H 8 *
Cornus kousa 'Satomi' H 8 *
Cornus kousa 'Wolf Eyes' H 8 *
Cornus kousa var. chinensis 'China Girl' H 8 *
Cornus kousa var. chinensis 'Satomi' H 8 *
Cornus mas G 8 *
Cornus mas 'Variegata' G 8 *
Cornus most species *
Cornus racemosa H 8 *
Cornus rugosa H 8 *
Cornus rugosa f. variegata H 8 *
Cornus stolonifera D *
Coronilla cappadocica ! E *
Coronilla minima J 6 7
Coronilla orientalis ! E *
Coronilla vaginalis J 6 7
Cortaderia richardii J
Cortusa altaica A
Cortusa matthioli A
Cortusa matthioli 'Alba' A
Cortusa matthioli subsp. altaica A
Cortusa matthioli subsp. pekinensis A
Cortusa matthioli subsp. turkestanica A
Cortusa turkestanica A
Corydalis adunca ! ?
Corydalis alba ! 3 *
Corydalis angustifolia ! L 3
Corydalis aurea ! L
Corydalis blanda subsp. parnassica ! 3 *
Corydalis cava ! D
Corydalis cava 'Albiflora ' ! E *
Corydalis cheilanthifolia ! A
Corydalis densiflora ! E *
Corydalis flexuosa ! L
Corydalis heterocarpa ! E *
Corydalis intermedia ! C *
Corydalis linstowiana ! A 3
Corydalis lutea ! C *
Corydalis magadanica ! L
Corydalis malkensis ! L
Corydalis nobilis ! L *
Corydalis ochroleuca ! A 3 *
Corydalis ophiocarpa ! L
Corydalis paczoskii ! L
Corydalis parnassica ! 3 *
Corydalis raddeana ! ?
Corydalis saxicola ! L
Corydalis scouleri ! 3 *
Corydalis sempervirens ! A 3 *
Corydalis shanginii ! L 3
Corydalis solida ! E *
Corydalis solida 'Merlin' ! E *
Corydalis solida f. transsylvanica 'George Baker' ! E *
Corydalis solida subsp. densiflora ! E *
Corydalis solida subsp. solida ! E *
Corydalis sp. ! L
Corydalis transsylvanica ! E
Corydalis tuberous - all species ! *
Corydalis turtschaninovii ! E
Corydalis wilsonii A
Corydalis zetterlundii ! L *
Corylopsis glabrescens D *
Corylus americana L 7 *
Corylus avellana 7 *
Corymbia citriodora G
Corymborkis veratrifolia *
Coryphantha sulcata A
Cosmidium burridgeanum 'Phillipine' K
Cosmos bipinnatus A
Cosmos bipinnatus 'Diablo' A
Cosmos bipinnatus 'Psyche' A
Cosmos bipinnatus 'Purity' A
Cosmos bipinnatus 'Sea Shells' A
Cosmos bipinnatus 'Xanthos' A
Cosmos hybrid A
Cosmos Sensation series A
Cosmos sp. A
Cosmos sulphureus A
Cosmos sulphureus 'Bright Lights' A
Cosmos sulphureus 'Cosmic Orange' A
Cosmos sulphureus 'Mona's Orange' A
Cosmos sulphureus 'Sunset Orange' A
Cota tinctoria A
Cotinus coggygria 'Golden Spirit' L
Cotinus coggygria 'Young Lady' L
Cotinus sp. L
Cotoneaster acutifolius L 6
Cotoneaster dielsianus D 3 6 7
Cotoneaster divaricatus D
Cotoneaster horizontalis F 6 7
Cotoneaster integerrimus 6 7 * *
Cotula hispida A
Cotyledon orbiculata A
Cotyledon simplicifolia A
Crambe abyssinica L
Crambe cordifolia A 3
Crambe maritima F
Crambe orientalis A
Craspedia globosa A 3
Crassula orbicularis A
Crassula sediodes A
Crassula sp. A
Crataegus crus-galli E
Crataegus laevigata 'Paul's Scarlet' D
Crataegus maximowiczii G 6
Crataegus pinnatifida H *
Crataegus sp. D 6 8 *
Cremanthodium arnicoides A
Crepis aurea A
Crepis incana F *
Crepis nana L
Crepis rubra A
Crepis rubra 'Snow White' A 3
Crocosmia 'Prince of Orange' A
Crocosmia Emberglow' A
Crocosmia Emily Mackenzie' A
Crocosmia hybrid A
Crocosmia John Boots' A
Crocosmia Lucifer' A
Crocosmia paniculata ! A
Crocosmia sp. K
Crocosmia Walcroy' A
Crocosmia x crocosmiiflora ! A
Crocosmia x crocosmiiflora 'George Davison' A
Crocosmia x crocosmiiflora 'Star of the East' A
Crocus angustifolius' Minor' L *
Crocus banaticus L *
Crocus biflorus subsp. alexandri L *
Crocus boryi ! L *
Crocus byzantinus L *
Crocus flavus subsp. flavus L *
Crocus fleischeri L *
Crocus Herald' L *
Crocus heuffelianus L *
Crocus iridiflorus L *
Crocus Jeanne d' Arc' L *
Crocus kotschyanus L *
Crocus macedonicus L *
Crocus minimus L *
Crocus nudiflorus L *
Crocus Princess Beatrix' L *
Crocus pulchellus L *
Crocus sativus var. cashmerianus L *
Crocus serotinus subsp. salzmannii L *
Crocus sp. L *
Crocus speciosus L *
Crocus speciosus 'Conqueror' L *
Crocus Striped Beauty' L *
Crocus tommasinianus L *
Crocus vallicola L *
Crocus vernus L *
Cryptantha sp. ! *
Cryptotaenia japonica D 2
Cryptotaenia japonica f. atropurpurea D 2
Cucubalus baccifer A
Cucumis sativus A
Cucumis sativus 'Crystal Apple' A
Cuphea procumbens K *
Cuphea sp. A
Cuphea viscosissima A
Cuphea x purpurea 'Firefly' A
Cupressus x leylandii 'Castwellen Gold' ?
Cupressus arizonica var. glabra J
Cupressus forbesii *
Cupressus sempervirens K
Cyananthus lobatus A
Cyanus cheiranthifolius A
Cyanus montanus A
Cyanus pindicola A
Cyanus segetum A
Cyclamen adzharicum A 2 7 *
Cyclamen africanum A 2 7 *
Cyclamen all species A 2 7 *
Cyclamen balearicum A 2 7 *
Cyclamen cilicium A 2 7 *
Cyclamen cilicium f. album A 2 7 *
Cyclamen coum A 2 7 *
Cyclamen coum 'Maurice Dryden' A 2 7 *
Cyclamen coum subsp. caucasicum A 2 7 *
Cyclamen coum subsp. coum A 2 7 *
Cyclamen graecum A 2 7 *
Cyclamen hederifolium A 2 7 *
Cyclamen hederifolium 'Album' A 2 7 *
Cyclamen hederifolium 'Bowles Apollo' A 2 7 *
Cyclamen hederifolium 'Rosenteppich' A 2 7 *
Cyclamen hederifolium 'Ruby Glow' A 2 7 *
Cyclamen intaminatum A 2 7 *
Cyclamen libanoticum A 2 7 *
Cyclamen mirabile A 2 7 *
Cyclamen neapolitanum A 2 7 *
Cyclamen persicum cultivar A 2 7 *
Cyclamen purpurascens A 2 7 *
Cyclamen purpurascens subsp. purpurascens A 2 7 *
Cyclamen repandum A 2 7 *
Cyclamen repandum subsp. rhodense A 2 7 *
Cyclanthera pedata A
Cydonia oblonga *
Cymbalaria aequitriloba A
Cymbalaria muralis A 3
Cynara cardunculus A
Cynara sp. A
Cynoglossum amabile A 3
Cynoglossum coelestinum A
Cynoglossum creticum A
Cynoglossum nervosum A
Cynoglossum officinale L 6
Cynoglossum sp. L
Cynoglossum zeylanicum A 2
Cypella caerulea A
Cypella coelestis A
Cypella herbertii ! K
Cypella sp. A
Cyperus involucratus A *
Cyperus papyrus A 3
Cyperus sp. J
Cypripedium acaule A 3 *
Cypripedium calceolus A 3 *
Cypripedium calceolus var. parviflorum A 3 *
Cypripedium calceolus var. pubescens A 3 *
Cypripedium candidum A 3 *
Cypripedium macranthos A 3 *
Cypripedium parviflorum A 3 *
Cypripedium parviflorum v. parviflorum A 3 *
Cypripedium pubescens A 3 *
Cypripedium reginae A 3 *
Cypripedium sp. A 3 *
Cyrtanthus brachysiphon A
Cyrtanthus elatus ! *
Cystopteris fragilis A *
Cytisus austraicus A 1 3 6 7
Cytisus austriacus subsp. pygmaeus A 1 6 7 *
Cytisus decumbens A 6 7 *
Cytisus hirsutus A 1 6 7
Cytisus praecox L 6 7 *
Cytisus procumbens A 6 7 *
Cytisus purpureus A 1 6 7 *
Cytisus ratisbonensis A 1 6 7
Cytisus ruthenicus A 1 6 7 *
Cytisus sp. L 6 7 *
Cytisus Vancouver Gold' J 6 7 *
Daboecia cantabrica f. alba A 3
Dactylicapnos macrocapnos ! B
Dactylicapnos scandens ! B
Dactylicapnos torulosa ! E *
Dactylorhiza elata A *
Dactylorhiza fuchsii A *
Dactylorhiza maculata A *
Dactylorhiza purpurella *
Dahlia merckii A
Dalea candida A
Dalea gattingeri A 7
Dalea purpurea A 6 7
Dalea sp. A
Daphne albowiana ! D 6 8
Daphne all species ! *
Daphne alpina ! D 6 8
Daphne altaica ! H 6 8
Daphne caucasica ! H 6 8
Daphne cneorum ! G 6 8
Daphne domini ! G 6 8
Daphne feddei ! H 6 8
Daphne giraldii ! D 6 8 *
Daphne hybrid ! H 6 8 *
Daphne kiusiana ! G 6 8
Daphne kosaninii ! G 6 8
Daphne laureola ! H 6 8
Daphne laureola subsp. philippi ! H 6 8
Daphne longilobata ! L 6 8 *
Daphne mezereum ! H 6 8
Daphne mezereum f. alba ! H 6 8
Daphne mezereum var. rubrum ! H 6 8
Daphne oleoides ! A 6 8 *
Daphne oleoides var. glandulosa ! A 6 8 *
Daphne pontica ! L 3 6 8 *
Daphne pontica subsp. haematocarpa ! D 6 8
Daphne reichsteinii ! L 6 8
Daphne sp. ! H 6 8 *
Daphne tangutica ! J 6 8
Darmera peltata E 7
Datisca cannabina B
Datura Ballerina Purple' A
Datura bernhardii A 4
Datura discolor A 6 7
Datura innoxia A
Datura metel A
Datura metel 'Belle Blanche' A
Datura metel 'Black Currant Swirl' A
Datura metel 'La Fleur Lilac' A
Datura meteloides D
Datura sp. A
Datura stramonium A 3
Daucus carota subsp. maximus A
Decaisnea insignis G 6 7
Degenia all species A
Degenia velebitica L
Deinanthe bifida A 3
Deinanthe caerulea A 3
Delosperma Allan's Apricot' A 3
Delosperma ashtonii A
Delosperma basuticum A 3
Delosperma brunnthaleri A
Delosperma congestum A
Delosperma cooperi A
Delosperma cooperi 'Candystone' A
Delosperma hirtum A 3
Delosperma Mountain Fire' A 3
Delosperma nelii A
Delosperma Red Mountain? Flame A
Delosperma sp. A
Delphinium 'Pacific Giants' A
Delphinium ajacis J
Delphinium ajacis 'QIS Dark Blue' A
Delphinium all species *
Delphinium alpinum J
Delphinium ambiguum A
Delphinium anthriscifolium A
Delphinium Astolat Group J
Delphinium barbeyi J
Delphinium belladonna J
Delphinium Belladonna Group A
Delphinium Blue Fountains Group J
Delphinium Blue Mirror' J
Delphinium brunonianum ! G *
Delphinium bulleyanum J
Delphinium caeruleum ! K *
Delphinium carolinianum H
Delphinium cashmerianum A
Delphinium caucasicum L
Delphinium consolida ! A
Delphinium decorum J
Delphinium elatum ! J
Delphinium elatum Millennium Hybrids A
Delphinium exaltatum K
Delphinium fissum G 2
Delphinium Galahad' J
Delphinium glaucum C
Delphinium grandiflorum J
Delphinium grandiflorum 'Blue Butterfly' J
Delphinium grandiflorum 'Blue Elf' J
Delphinium grandiflorum 'Blue Pygmy' J
Delphinium grandiflorum 'Sky Blue' J
Delphinium grandiflorum 'Summer Blues' J
Delphinium grandiflorum 'Summer Morning' J
Delphinium grandiflorum 'Summertime Blues' J
Delphinium grandiflorum f. album J
Delphinium grandiflorum var. chinense J
Delphinium hybrid J
Delphinium likiangense A
Delphinium Magic Fountains series K
Delphinium menziesii A *
Delphinium novomexicanum A
Delphinium nudicaule J
Delphinium occidentale H
Delphinium oreophilum L
Delphinium oxysepalum A
Delphinium Pacific hybrid A
Delphinium Pacific hybrids A
Delphinium pylzowii F
Delphinium ramosum L
Delphinium semibarbatum A
Delphinium sp. J
Delphinium speciosum L
Delphinium Summer Skies Group J
Delphinium tatsienense A
Delphinium tricorne ! D *
Delphinium vestitum F
Delphinium zalil F
Dendranthema occidentali - japonense A 3
Derwentia perfoliata L
Deschampsia cespitosa A
Deschampsia cespitosa 'Pixie Fountain' A
Deschampsia flexuosa A
Desmanthus illinoensis A 5
Desmodium canadense A 6
Dianella tasmanica A 7 *
Dianthus 'Diana Lavender Picotee' A
Dianthus 'Diana' A
Dianthus 'Fire and Ice' A
Dianthus 'Magic Charms' mix A
Dianthus acicularis A
Dianthus all species A *
Dianthus Allwoodii Alpinus Group A
Dianthus alpinus B
Dianthus alpinus 'Joan's Blood' A
Dianthus alpinus x callizonus B
Dianthus amurensis A
Dianthus amurensis 'Siberian Blue' A
Dianthus andrzejowskianus A
Dianthus arenarius A
Dianthus arenarius 'Little Maiden' A
Dianthus arenarius ssp. bohemicus A
Dianthus arenarius ssp. borussicus A
Dianthus armeria A 3
Dianthus arpadianus A
Dianthus barbatus A
Dianthus barbatus 'Darkest of All' A
Dianthus barbatus 'Nigrescens' A 2
Dianthus barbatus 'Sooty' A
Dianthus barbatus 'Super Duplex Mixed' A
Dianthus barbatus 'Super Duplex' A
Dianthus barbatus Nigrescens Group A
Dianthus Baths Pink' A
Dianthus Berlin Snow' A
Dianthus Blue Hills' A
Dianthus brevicaulis A
Dianthus caesius A
Dianthus callizonus A
Dianthus campestris A
Dianthus capitatus A
Dianthus capitatus subsp. andrzejowskianus A
Dianthus carthusianorum A 2
Dianthus carthusianorum 'Nanus' A 2
Dianthus carthusianorum var. humilis A 2
Dianthus caryophyllus A 2
Dianthus caucasicus A
Dianthus Chianti' A
Dianthus chinensis A
Dianthus chinensis 'Purple Picotee' A
Dianthus crinitus A
Dianthus cruentus A
Dianthus deltoides A
Dianthus deltoides 'Albus' A
Dianthus deltoides 'Brilliant' A
Dianthus deltoides 'Fire and Ice' A
Dianthus deltoides 'Flashing Light' A
Dianthus deltoides 'Leuchtfunk' A
Dianthus deltoides 'Nelli' A
Dianthus deltoides 'Shrimp' A
Dianthus erinaceus A
Dianthus erinaceus var. alpinus A
Dianthus ferrugineus A
Dianthus fischeri A *
Dianthus fragrans A
Dianthus freynii A
Dianthus furcatus J
Dianthus giganteiformis subsp. pontederae A
Dianthus giganteus A
Dianthus glacialis A
Dianthus glacialis subsp. gelidus A
Dianthus glomeratus var. acaulis A
Dianthus gracilis A
Dianthus gratianopolitanus A 2
Dianthus gratianopolitanus 'Badenia' A 2
Dianthus gratianopolitanus 'Sternkissen' A 2
Dianthus haematocalyx A
Dianthus haematocalyx ssp. ventricosus A
Dianthus haematocalyx subsp. pinidicola A
Dianthus hungaricus A
Dianthus hybrid A
Dianthus hyssopifolius A
Dianthus Inshriach Dazzler' A
Dianthus knappii A
Dianthus La Bourboule' A
Dianthus leucophaeus A 2
Dianthus Little Jock' A
Dianthus Loveliness' A
Dianthus lumnitzeri A
Dianthus lusitanus A
Dianthus microlepis A
Dianthus Minimounds' A
Dianthus monspessulanus A
Dianthus monspessulanus subsp. sternbergii A
Dianthus Mountain Mist' A
Dianthus Mrs Holt' A
Dianthus myrtinervius A
Dianthus myrtinervius subsp. caespitosus A
Dianthus nardiformis A
Dianthus nitidus A
Dianthus noeanus A
Dianthus parnassicus A
Dianthus pavonius A
Dianthus pavonius var. neglectus ?
Dianthus petraeus subsp. noeanus A
Dianthus petraeus var. orbelicus A
Dianthus plumarius A
Dianthus plumarius 'Fruhlingswonne' A
Dianthus plumarius subsp. blandus A
Dianthus pontederae A
Dianthus pungens 'Tight Blue' A
Dianthus Rachel' A
Dianthus Rainbow Loveliness' A
Dianthus repens A
Dianthus rock garden mix A
Dianthus seguieri A
Dianthus serotinus A
Dianthus shinanensis A
Dianthus simulans A
Dianthus sp. A
Dianthus spiculifolius A
Dianthus squarrosus A
Dianthus sternbergii A
Dianthus subacaulis A
Dianthus subacaulis 'Tight Blue' A
Dianthus subacaulis subsp. brachyanthus A
Dianthus superbus A
Dianthus superbus 'Crimsonia' A
Dianthus superbus var. longicalycinus A
Dianthus sylvestris A
Dianthus sylvestris subsp. sylvestris A
Dianthus sylvestris subsp. tergestinus A
Dianthus tenuifolius A
Dianthus tergestinus A
Dianthus uralensis A
Dianthus versicolor A
Dianthus viscidus A
Dianthus webbianus A
Dianthus weyrichii A
Dianthus Whatfield Mini' A
Dianthus Whatfield White' A
Dianthus zonatus A
Diapensia lapponica E
Diarrhena japonica L
Diascia Ruby Field' A
Diascia sp. A
Dicentra cucullaria ! E *
Dicentra eximia ! E *
Dicentra eximia 'Alba' ! E *
Dicentra eximia 'Snowdrift' ! E *
Dicentra formosa ! E *
Dicentra formosa 'Bacchanal' ! E *
Dicentra hybrid ! E *
Dicentra oregona ! E *
Dicentra pauciflora ! E *
Dicentra peregrina ! E *
Dicentra scandens ! E *
Dicentra sp. ! E *
Dicentra spectabilis ! E *
Dicentra spectabilis 'Alba' ! E *
Dicentra spectabilis 'Valentine' ! E *
Dicentra Stuart Boothman' ! E *
Dicentra Sweetheart' ! E *
Dicentra torulosa ! E *
Dichromena colorata A *
Dicranostigma franchetianum A
Dicranostigma lactucoides A
Dicranostigma leptopodum J
Dictamnus albus ! J
Dictamnus albus 'Albiflorus' ! J
Dictamnus albus 'Purpureus' ! J
Dictamnus albus 'Rosea' ! G
Dictamnus albus 'Rubra' ! G
Dictamnus albus var. albus ! G
Dictamnus albus var. fraxinella ! G
Dictamnus albus var. purpureus ! J
Dictamnus albus var. roseus ! G
Dictamnus fraxinella ! G
Dierama igneum A
Dierama pulcherrimum B
Diervilla lonicera A 3
Diervilla x splendens A
Dietes iridioides A
Digiplexis Illumination Flame' *
Digitalis alba A
Digitalis ambigua A 3
Digitalis ciliata A
Digitalis davisiana A 3
Digitalis dubia F
Digitalis ferruginea A
Digitalis ferruginea 'Gelber Herold' A
Digitalis ferruginea 'Gigantea Gelber Herold' A
Digitalis ferruginea 'Gigantea' A
Digitalis grandiflora A
Digitalis grandiflora 'Carillon' A
Digitalis grandiflora 'Dropmore Yellow' A
Digitalis grandiflora 'Temple Bells' A
Digitalis hybrid A
Digitalis John Innes Tetra' A
Digitalis laevigata A
Digitalis lamarckii J
Digitalis lanata A
Digitalis lutea A
Digitalis mertonensis A
Digitalis nervosa A 3
Digitalis obscura A 3
Digitalis orientalis A 3
Digitalis parviflora A
Digitalis parviflora 'Milk Chocolate' A
Digitalis purpurea A
Digitalis purpurea 'Alba' A
Digitalis purpurea 'Apricot Beauty' A
Digitalis purpurea 'Apricot Faerie Queen' A
Digitalis purpurea 'Dalmatian Peach' A
Digitalis purpurea 'Dalmatian Purple' A
Digitalis purpurea 'Faerie Queen' A
Digitalis purpurea 'Pam's Choice' A
Digitalis purpurea 'Peloric' A
Digitalis purpurea 'Snow Thimble' A
Digitalis purpurea 'Sutton's Apricot' A
Digitalis purpurea (Excelsior Group) A
Digitalis purpurea (Foxy Group) A
Digitalis purpurea f. alba A
Digitalis purpurea f. albiflora A
Digitalis purpurea subsp. heywoodii 'Pink Champagne' A
Digitalis purpurea var. albiflora A
Digitalis purpurea var. mariana A
Digitalis schischkinii A
Digitalis sp. A 3
Digitalis stewartii A 3
Digitalis thapsi A
Digitalis thapsi 'Spanish Peaks' A
Digitalis trojana A
Digitalis viridiflora A 2
Digitalis x fulva A
Digitalis x mertonensis A
Digitalis x sibirica A 3
Dioscorea caucasica L *
Dioscorea batatas A 2
Dioscorea japonica A
Dioscorea villosa A
Diospyros virginiana G 8
Diphylleia cymosa ! H
Diplazium pycnocarpon A
Diplotaxis tenuifolia A
Dipsacus fullonum A 3
Dipsacus japonicus J
Dipsacus laciniatus ! A
Dipsacus pilosus A 3
Dipsacus sativus A
Dipsacus strigosus H 2
Disanthus cercidifolius ?
Discopleura capillacea A
Disporum cantoniense C 7
Disporum hookeri H 3 8
Disporum lutescens A 3
Disporum maculatum D
Disporum sessile 'Variegatum' ! G *
Disporum uniflorum ! L 3
Dodecatheon alpinum A 3
Dodecatheon amethystinum G
Dodecatheon clevelandii A 3
Dodecatheon conjugens F
Dodecatheon dentatum F
Dodecatheon hendersonii ! J
Dodecatheon hendersonii 'Sooke' ! J
Dodecatheon jeffreyi G
Dodecatheon meadia F *
Dodecatheon meadia 'Aphrodite' G
Dodecatheon meadia f. album F *
Dodecatheon pulchellum A 2 *
Dodecatheon pulchellum 'Sooke Variety' A 2 *
Dodecatheon pulchellum subsp. pulchellum 'Red Wings' A 2 *
Dodecatheon redolens F
Dodecatheon sp. ! L
Dodecatheon tetrandum G
Dodonaea viscosa A
Dodonaea viscosa 'Purpurea' A
Doellingeria umbellata A
Doronicum austriacum A
Doronicum clusii A 3
Doronicum columnae A
Doronicum grandiflorum L
Doronicum hungaricum A
Doronicum Little Leo' A
Doronicum orientale A
Doronicum orientale 'Little Leo' A
Doronicum orientale 'Magnificent' A
Doronicum pardalianches A 3
Doronicum species A *
Dorycnium hirsutum A
Dorycnium rectum A 6
Douglasia laevigata L
Douglasia montana ! L
Draba acaulis G
Draba aizoides A 3
Draba all species *
Draba alpina var. glacialis A
Draba altaica G
Draba alticola K
Draba arabisans A 3
Draba arabisans var. canadensis A 3
Draba archibaldii B
Draba aspera A
Draba athoa A
Draba bertolonii A
Draba borealis A
Draba breweri A
Draba breweri var. cana A
Draba bruniifolia A
Draba bruniifolia subsp. olympica A
Draba bruniifolia subsp. olympica var. lanata A
Draba bryoides L
Draba bryoides var. imbricata F
Draba cappadocica A
Draba compacta A
Draba cretica A
Draba cusickii A
Draba cuspidata A 3
Draba darwasica A
Draba dedeana F
Draba densifolia A
Draba fladnizensis J
Draba haynaldii J
Draba hispanica A 3
Draba hoppeana A
Draba incerta F
Draba kitadakensis A
Draba klasterskyi A
Draba korabensis A 3
Draba kotschyi A 3
Draba lanceolata A
Draba lasiocarpa A
Draba loiseleurii A 3
Draba longisiliqua A 3
Draba magellanica A
Draba mollissima A
Draba most species A *
Draba nivalis A 3
Draba norvegica A
Draba oligosperma A 3
Draba parnassica A
Draba paysonii A 3
Draba polytricha A
Draba pyrenaica A
Draba ramosissima A 3
Draba rigida A 3
Draba rigida var. bryoides A 3
Draba rosularis A 3
Draba sakuraii A 3
Draba sauteri J
Draba shiroumana A
Draba simonkaiana A
Draba sp. A 3
Draba sphaeroides A 3
Draba sphaeroides var. cusickii A 3
Draba stellata K
Draba subalpina A
Draba thymbriphyrestus J
Draba tomentosa A
Draba ussuriensis A 3
Draba ventosa A 3
Dracocephalum argunense F
Dracocephalum argunense 'Album' F
Dracocephalum argunense 'Fuji White' F
Dracocephalum argunense var. japonicum F
Dracocephalum austriacum A
Dracocephalum botryoides A
Dracocephalum calophyllum A
Dracocephalum calophyllum var. smithianum A
Dracocephalum foetidum A
Dracocephalum forrestii A
Dracocephalum grandiflorum A
Dracocephalum hemsleyanum J
Dracocephalum imberbe A
Dracocephalum isabellae A
Dracocephalum moldavica A
Dracocephalum nutans A
Dracocephalum palmatum A
Dracocephalum renati A
Dracocephalum rupestre A
Dracocephalum ruyschiana J
Dracocephalum sp. J
Dracocephalum tanguticum A
Dracocephalum wendelboi A
Dracunculus vulgaris A 8 *
Dregea sinensis ! A
Drosera filiformis J *
Drosera intermedia L *
Drosera linearis J *
Drosera rotundifolia A
Dryas drummondii ! A
Dryas grandis L
Dryas integrifolia J
Dryas octopetala J
Dryas octopetala 'Minor' J
Dryas octopetala var. integrifolia J
Dryas suendermanni A
Dryas x suendermanni A
Drymocallis corsica A 3
Drymocallis rupestris A 3
Dryomocallis rupestris A 3
Dudleya pulverulenta A
Duranta erecta 'Sapphire Showers' A
Duranta species A
Dysosma pleiantha ! G *
Dysosma veitchii ! J *
Dystaenia ibukiensis ?
Eccremocarpus scaber F 3
Eccremocarpus scaber 'Ruber' F 3
Echeveria hybrid A
Echinacea 'Hot Papaya' A
Echinacea 'Supreme Cantaloupe' A
Echinacea angustifolia A
Echinacea Cheyenne Spirit' A
Echinacea Green Envy' A
Echinacea Julia' A
Echinacea Leilani' A
Echinacea pallida A
Echinacea pallida 'Hula Dancer' A
Echinacea paradoxa A
Echinacea Pow Wow Wild Berry' A
Echinacea purpurea A
Echinacea purpurea ''Primadonna Deep Rose' A
Echinacea purpurea 'Alba' A
Echinacea purpurea 'Baby Swan Pink' A
Echinacea purpurea 'Baby Swan White' A
Echinacea purpurea 'Baby Swan White' A
Echinacea purpurea 'Bright Star' A
Echinacea purpurea 'Doppelganger' A
Echinacea purpurea 'Double Decker' A
Echinacea purpurea 'Fatal Attraction' A
Echinacea purpurea 'Jade' A
Echinacea purpurea 'Kim's Knee High' A
Echinacea purpurea 'Magnus' A
Echinacea purpurea 'Pow Wow Wild Berry' A
Echinacea purpurea 'Primadonna White' A
Echinacea purpurea 'Robert Bloom' A
Echinacea purpurea 'Ruby Giant' A
Echinacea purpurea 'Ruby Star' A
Echinacea purpurea 'The King' A
Echinacea purpurea 'White Lustre' A
Echinacea purpurea 'White Swan' A
Echinacea purpurea PowWow Series A
Echinacea Sombrero Salsa Red' A
Echinacea Sombrero Series A
Echinacea sp. G
Echinacea Sunrise' (big Sky Series) A
Echinacea tennesseensis A *
Echinacea x hybrida A
Echinocystis lobata L
Echinops bannaticus A
Echinops bannaticus 'Blue Glow' A
Echinops bannaticus 'Star Frost' A
Echinops exaltatus A
Echinops ritro A
Echinops ritro 'Alba' A
Echinops ritro 'Veitch's Blue' A
Echinops ritro subsp. ruthenicus A
Echinops ruthenicus A
Echinops sp. A
Echinops sphaerocephalus A 2
Echinops sphaerocephalus 'Arctic Glow' A 2
Echinops spinosissimus subsp. spinosissimus A
Echinospartum horridum A 1 6 7 *
Echium amoenum A
Echium gentianoides A
Echium lycopsis A
Echium plantagineum A
Echium russicum A
Echium russicum 'Red Feathers' A
Echium sp. ?
Echium vulgare A
Echium vulgare 'Blue Bedder' F
Edraianthus dalmaticus A
Edraianthus dalmaticus 'Albus' A
Edraianthus dinaricus L
Edraianthus graminifolius A
Edraianthus horvatii L
Edraianthus niveus A
Edraianthus owerinianus J
Edraianthus parnassicus L *
Edraianthus pumilio A 3 *
Edraianthus serbicus A
Edraianthus serpyllifolius B
Edraianthus sp. A
Edraianthus tenuifolius A
Edraianthus tenuifolius 'Albus' A
Elaeagnus multiflora ! F *
Elaeagnus rhamnoides G 4
Eleocharis radicans ? *
Eleutherococcus senticosus D
Eleutherococcus sessiliflorus *
Elsholtzia ciliata A
Elsholtzia sp. A
Elsholtzia stauntonii A
Elymus elymoides J
Elymus glaucus A
Elymus hystrix A
Embothrium coccineum A 3
Embothrium coccineum (Lanceolatum Group) A 3
Emilia coccinea A
Emilia coccinea 'Scarlet Magic' A
Emilia sagittata A
Emilia sonchifolia A
Empetrum eamesii *
Empetrum nigrum L 5
Empetrum nigrum var. nigrum L 5
Empetrum pinnatum ! A
Enkianthus campanulatus A
Ephedra americana A
Ephedra chilensis ?
Ephedra equisetina A
Ephedra minima A 2
Ephedra minuta A
Ephedra monosperma A 2
Ephedra sp. L
Epilobium angustifolium A *
Epilobium angustifolium var. album A *
Epilobium canum subsp. garrettii A 3
Epilobium crissum A
Epilobium fleischeri L
Epilobium hirsutum A
Epilobium latifolium A 2
Epilobium luteum A 3 *
Epilobium obcordatum A
Epilobium sp. A
Epimedium grandiflorum 'Lilafee' ! L
Epimedium grandiflorum 'Purple Prince' ! A
Epimedium koreanum ! L
Epimedium pinnatum subsp. colchicum ! L
Epimedium pubigerum ! A
Epimedium x warleyense 'Orangekonigin' ! A
Epipactis helleborine A *
Epipactis latifolia A *
Epipactis sp. *
Eragrostis curvula A 3
Eragrostis spectabilis G
Eragrostis trichodes B 3
Eranthis cilicica ! C *
Eranthis hyemalis ! C *
Eranthis longistipitata ! C *
Eremogone hookeri A
Eremogone pseudacantholimon A
Eremurus 'Pinocchio' ! L *
Eremurus altaicus C
Eremurus bungei ! L *
Eremurus himalaicus ! L *
Eremurus hybrid ! L
Eremurus Moneymaker' ! L *
Eremurus robustus ! D *
Eremurus sp. ! L
Eremurus stenophyllus ! L *
Eremurus stenophyllus subsp. stenophyllus ! L *
Eremurus stenophyllus var. bungei ! L *
Eremurus tianschanicus F
Eremurus x isabellinus 'Cleopatra' L
Eremurus x isabellinus Ruiter hybrid L
Eremurus x isabellinus Shelford Hybrids L
Erianthus ravennae A
Erica tetralix K
Ericameria discoidea A
Ericameria nauseosa A
Erigeron 'Azurfee' A
Erigeron alpinus A
Erigeron atticus A
Erigeron aurantiacus A
Erigeron aureus A
Erigeron aureus 'Canary Bird' A
Erigeron austiniae A
Erigeron Azure Fairy' A
Erigeron borealis A
Erigeron caespitosus A
Erigeron chrysopsidis A
Erigeron chrysopsidis 'Grand Ridge' A
Erigeron chrysopsidis var. brevifolius A
Erigeron compactus A
Erigeron compositus A
Erigeron compositus var. dicoideus A
Erigeron compositus var. glabratus A
Erigeron consimilis A
Erigeron eatonii var. lavandulus A
Erigeron elegantulus A
Erigeron flettii A 2
Erigeron frigidus A
Erigeron glabellus A
Erigeron glaucus F
Erigeron glaucus 'Olga' F
Erigeron grandiflorus A
Erigeron heterochaeta A
Erigeron howellii A
Erigeron humilis L
Erigeron hybrid A
Erigeron hybridus A
Erigeron hyssopifolius A
Erigeron karvinskianus A 3
Erigeron leiomerus A
Erigeron linearis A
Erigeron nanus A
Erigeron oreganus A
Erigeron peregrinus A
Erigeron peregrinus ssp. callianthemus A
Erigeron pinnatisectus A
Erigeron pulchellus A
Erigeron pyrenaicus A
Erigeron radicatus A
Erigeron Rosa Juwel' A
Erigeron scopulinus A
Erigeron simplex A
Erigeron sp. A
Erigeron speciosus A
Erigeron subtrinervis A
Erigeron trifidus A
Erigeron uniflorus A
Erigeron ursinus A
Erigeron villarsii A
Erinus alpinus A 3
Erinus alpinus 'Carmineus' A 3
Erinus alpinus 'Dr. Hahnle' A 3
Erinus alpinus var. albus A 3
Eriogonum alatum A
Eriogonum angustifolium A
Eriogonum caespitosum D
Eriogonum compositum A
Eriogonum heracleoides var. heracleoides A
Eriogonum jamesii A *
Eriogonum kennedyi var. kennedyi B 1
Eriogonum niveum G
Eriogonum ovalifolium G
Eriogonum umbellatum C 1 *
Eriophorum angustifolium A 3 *
Eriophorum chamissonis E 7
Eriophorum russeolum E 7
Eriophorum scheuchzeri A 3
Eriophorum sp. ? 3
Eriophorum vaginatum A 3
Eriophorum virginicum ? *
Eriophyllum lanatum F *
Eriophyllum lanatum 'Pointe' F *
Eriophyllum lanatum var. integrifolium F *
Eritrichium canum A
Eritrichium kamtschaticum C
Eritrichium nanum var. elongatum ! A
Eritrichium pectinatum J
Eritrichium rupestre var. pectinatum J
Eritrichium sibiricum ?
Eritrichium villosum C
Erodium castellanum A
Erodium cedrorum subsp. cedrorum L
Erodium chrysanthum A
Erodium cygnorum A
Erodium glandulosum L
Erodium gruinum A
Erodium manescavi A
Erodium pelargoniflorum A
Erodium Wiliam Bishop' A
Eruca sativa A
Eruca vesicaria var. sativa A
Eryngium agavifolium B
Eryngium alpinum A
Eryngium alpinum 'Blue Star' A
Eryngium alpinum 'Superbum ' A
Eryngium amethystinum G
Eryngium aquaticum ! A
Eryngium aquaticum ! A
Eryngium aquifolium A
Eryngium aquifolium A
Eryngium bourgatii E *
Eryngium bourgatii 'Picos Blue' E
Eryngium caucasicum A
Eryngium giganteum E 1
Eryngium maritimum A
Eryngium pandanifolium E
Eryngium planum B
Eryngium planum 'Blaukappe' B
Eryngium planum 'Blue Glitter' B
Eryngium planum 'Blue Hobbit' B
Eryngium planum 'Tiny Jackpot' B
Eryngium Sapphire Blue' B
Eryngium sp. L
Eryngium spinalba ! E
Eryngium tripartitum A
Eryngium variifolium J
Eryngium vesiculosum A
Eryngium x tripartitum A
Eryngium x zabelii 'Big Blue' ?
Eryngium yuccifolium F
Erysimum albescens A
Erysimum all species A
Erysimum allionii A
Erysimum alpinum J
Erysimum altaicum A
Erysimum amoenum A 3
Erysimum arenicola A
Erysimum bicolor A
Erysimum capitatum A 3
Erysimum carium A
Erysimum cheiri A
Erysimum cuspidatum A
Erysimum Ellen Willmott' ?
Erysimum helveticum A
Erysimum hieracifolium A
Erysimum hungaricum A
Erysimum kotschyanum A
Erysimum linifolium K
Erysimum marshallii A
Erysimum Moonlight' K
Erysimum nivale A 3
Erysimum Orange Flame' A
Erysimum pieninicum A
Erysimum sp. K
Erysimum sylvestre J
Erysimum wheeleri A
Erysimum wilczekianum J
Erysimum witmannii A
Erysimum wittmannii A
Erysimum x cheiri A
Erysimum x marshallii A
Erythronium americanum ! C
Erythronium californicum ! J
Erythronium caucasicum ! H 7 *
Erythronium dens-canis ! E *
Erythronium elegans ! L
Erythronium grandiflorum ! H *
Erythronium hendersonii ! L
Erythronium japonicum ! K 7 *
Erythronium Jeanette Brickell' ! L
Erythronium montanum ! H
Erythronium multiscapideum ! J
Erythronium oregonum ! E
Erythronium revolutum ! D
Erythronium species ! L
Erythronium tuolumnense 'Pagoda' ! L *
Eschscholzia caespitosa A 1
Eschscholzia caespitosa 'Sundew' A
Eschscholzia californica A
Eschscholzia californica 'Buttermilk' A
Eschscholzia californica 'Mission Bells' A
Eschscholzia californica 'Rosa Romantica' A
Eschscholzia californica 'Sunshine' A
Eschscholzia californica 'White Linen' A
Eschscholzia californica ((Thai Silk Series) A
Eschscholzia sp. A
Escobaria vivipara A *
Eucalyptus ambigua G *
Eucalyptus bridgesiana A
Eucalyptus citriodora G
Eucalyptus cordata A *
Eucalyptus gunnii A *
Eucalyptus nitida G *
Eucalyptus perriniana G *
Eucalyptus rodwayi G *
Eucalyptus subcrenulata G *
Eucalyptus urnigera A *
Eucalyptus vernicosa G *
Eucomis 'Aloha Kona' A 2
Eucomis 'Aloha Tiki' A 2
Eucomis autumnalis A 6 *
Eucomis bicolor A
Eucomis comosa A
Eucomis comosa 'Sparkling Burgundy' A
Eucomis Leia' A 2
Eucomis pallidiflora subsp. pole-evansii A
Eucomis pallidiflora subsp. pole-evansii A
Eucomis sp. A
Eucomis vandermerwei A
Euonymus angustifolius L
Euonymus atropurpureus D
Euonymus bungeanus L 8
Euonymus hamiltonianus H
Euonymus nanus var. turkestanicus J
Euonymus phellomanus L
Euonymus planipes F
Euonymus sachalinensis F
Euonymus sp. L
Eupatorium cannabinum A
Eupatorium dubium J 3
Eupatorium dubium 'Baby Joe' J 3
Eupatorium fistulosum A
Eupatorium fistulosum f. albidum A
Eupatorium fistulosum f. albidum 'Ivory Towers' A
Eupatorium lindleyanum A
Eupatorium maculatum A
Eupatorium perfoliatum A 3
Eupatorium purpureum A
Eupatorium rugosum A 3
Eupatorium rugosum 'Braunlaub' A 3
Eupatorium rugosum 'Chocolate' A 3
Eupatorium sp. K
Euphorbia cornigera A
Euphorbia corollata E
Euphorbia cyparissias E
Euphorbia griffithii E
Euphorbia lathyris A
Euphorbia leuconeura A
Euphorbia marginata A 1
Euphorbia myrsinites C 3
Euphorbia nicaeensis K
Euphorbia peplus A
Euphorbia polychroma A
Euphorbia schillingii A
Euphorbia sp. C
Eurybia divaricata A
Eurybia macrophylla G
Eutrochium dubium G
Eutrochium dubium 'Baby Joe' G
Eutrochium dubium 'Little Joe' J
Eutrochium maculatum A
Eutrochium purpureum A
Exochorda korolkowii A
Exochorda The Bride' L
Exochorda x macrantha 'The Bride' L
Fagopyrum esculentum A
Fallopia Breaststroke' ?
Fallopia sp. ?
Fallugia paradoxa A
Fargesia nitida ! A *
Favratia zoysii L *
Felicia amelloides J
Felicia bergeriana A
Felicia heterophylla A
Felicia rosulata A
Felicia sp. ?
Felicia Tosca Blue' A
Ferula asafoetida L
Ferula assa-foetida L
Ferula communis A
Ferula glauca A
Ferula tingitana G *
Fessia greilhuberi A
Festuca amethystina A
Festuca gautieri A
Festuca gautieri 'Pic Carlit' A
Festuca glauca A
Festuca glauca 'Elijah Blue' A
Festuca ovina 'Glauca' A
Festuca valesiaca B
Fibigia all species A
Fibigia clypeata A
Fibigia macrocarpa A
Fibigia sp. A
Fibigia triquetra A 3
Filipendula camtschatica A
Filipendula digitata 'Nana' B
Filipendula glaberrima J
Filipendula hexapetala K
Filipendula koreana K
Filipendula multijuga B *
Filipendula palmata 'Nana' D
Filipendula palmata 'Rosea' D
Filipendula purpurea 'Elegans' A
Filipendula rubra ! E
Filipendula rubra 'Venusta' ! E
Filipendula ulmaria A 3
Filipendula ulmaria 'Aurea' A 3
Filipendula vestita ?
Filipendula vulgaris K
Filipendula vulgaris 'Flore Pleno' K
Filipendula vulgaris 'Plena' K
Filipendula vulgaris 'Variegata' K
Flueggea suffruticosa A
Foeniculum vulgare A
Foeniculum vulgare 'Purpurascens' A
Foeniculum vulgare 'Purpureum' A
Foeniculum vulgare 'Rubrum' A
Forestiera neomexicana G
Fothergilla major *
Fothergilla sp. *
Francoa ramosa A
Francoa sonchifolia A 2
Franklinia alatamaha ! J
Frasera speciosa E
Fraxinus chinensis subsp. rhynchophylla ! L
Fraxinus pennsylvanica C *
Freesia hybrids A 6
Freesia laxa A 3 *
Freesia laxa 'Joan Evans' A 3 *
Freesia laxa subsp. azurea A 3 *
Freesia species A 3 *
Fremontodendron californicum A 7
Fritillaria acmopetala ! G *
Fritillaria affinis ! L *
Fritillaria all species ! *
Fritillaria bithynica ! L *
Fritillaria bucharica ! L *
Fritillaria camschatcensis ! L *
Fritillaria caucasica ! L *
Fritillaria cirrhosa ! L *
Fritillaria collina ! J *
Fritillaria crassifolia subsp. kardiya ! L *
Fritillaria eduardii ! L *
Fritillaria forbesii ! L *
Fritillaria graeca ! L *
Fritillaria graeca subsp. thessala ! L *
Fritillaria imperialis ! H *
Fritillaria imperialis 'Aureomarginata' ! H *
Fritillaria imperialis 'Aurora' ! H *
Fritillaria imperialis 'Lutea' ! H *
Fritillaria kardiya ! L *
Fritillaria korolkowia ! L *
Fritillaria lusitanica ! L *
Fritillaria meleagris ! L *
Fritillaria meleagris 'Alba' ! L *
Fritillaria meleagris subsp. meleagris ! L *
Fritillaria messanensis ! L *
Fritillaria michailovskyi ! L *
Fritillaria montana ! L *
Fritillaria nervosa ! L *
Fritillaria nigra ! L *
Fritillaria orientalis ! L *
Fritillaria pallida ! L *
Fritillaria pallidiflora ! L *
Fritillaria persica ! L *
Fritillaria pontica ! L *
Fritillaria pyrenaica ! L *
Fritillaria raddeana ! L *
Fritillaria ruthenica ! L *
Fritillaria sewerzowii ! L *
Fritillaria stenanthera ! L *
Fritillaria tenella ! L *
Fritillaria thunbergii ! L *
Fritillaria walujewii ! L *
Fuchsia x bacillaris A 3
Gaillardia x grandiflora 'Arizona Apricot' A
Gaillardia ? grandiflora 'Kobold' A
Gaillardia aristata A
Gaillardia grandiflora A
Gaillardia mix A
Gaillardia Prairie Sun' A
Gaillardia pulchella A
Gaillardia pulchella 'Red Plume' A
Gaillardia Red Plume' A
Gaillardia Royal Monarch Red' A
Gaillardia sp. A
Gaillardia x grandiflora A
Gaillardia x grandiflora 'Arizona Red Shades' A
Gaillardia x grandiflora 'Arizona Sun' A
Gaillardia x grandiflora 'Burgunder' A
Gaillardia x grandiflora 'Goblin' A
Gaillardia x grandiflora 'Kobold' A
Gaillardia x grandiflora 'Mesa Yellow' A
Gaillardia x grandiflora (Gallo Series) A
Galactites tomentosa A
Galanthus caucasicus ? *
Galanthus elwesii ! H *
Galanthus ikariae K
Galanthus nivalis ? *
Galanthus plicatus ? *
Galanthus woronowii K
Galax urceolata K
Galega officinalis A 3 *
Galega orientalis A
Galega trifoliata L *
Galeopsis speciosa G 2
Galium aparine A
Galium glaucum ?
Galium odoratum A
Galium tricornutum ! *
Galtonia candicans ! A 2
Galtonia viridiflora B
Gaultheria adenothrix G 3 8 *
Gaultheria fragrantissima G 3 8 *
Gaultheria procumbens A 3 8
Gaultheria shallon A 3
Gaultheria sp. G 3 8 *
Gaura biennis J
Gaura lindheimeri A 2
Gaura lindheimeri 'Sparkle White' A 2
Gaura lindheimeri 'Whirling Butterflies' A 2
Gaura sp ? 2
Gaylussacia baccata C
Gazania 'Kiss Frosty White Flame' A
Gazania krebsiana K 2 *
Gazania linearis A
Gelasine coerulea A
Genista albida A 7 *
Genista dalmatica A 7 *
Genista hispanica subsp. occidentalis G 7
Genista horrida A 1 6 7 *
Genista michelii A 7 *
Genista pilosa 'Vancouver Gold' L 7
Genista procumbens A 6 7 *
Genista sagittalis A 1 6 7
Genista sagittalis subsp. delphinensis A 1 6 7
Genista sp. A 1 6 7 *
Genista subcapitata L 1 6 7
Genista sylvestris A 7 *
Genista sylvestris var. pungens A 7 *
Genista tinctoria A 1 6 7
Gentiana 'True Blue' E 3 *
Gentiana acaulis D 4 *
Gentiana acaulis 'Arctic Fanfare' D 4 *
Gentiana acaulis 'Rannoch' D 4 *
Gentiana affinis L *
Gentiana alba A *
Gentiana andrewsii E 3 *
Gentiana angulosa L 3 *
Gentiana angustifolia A *
Gentiana angustifolia 'Frei' C *
Gentiana angustifolia 'Iceberg' C *
Gentiana asclepiadea A 3 *
Gentiana asclepiadea 'Alba' A 3 *
Gentiana asclepiadea 'Rosea' A 3 *
Gentiana bavarica var. subacaulis E *
Gentiana bigelowii L *
Gentiana boissieri G *
Gentiana burseri subsp. villarsii L *
Gentiana cachemirica A *
Gentiana calycosa A *
Gentiana clausa L *
Gentiana clusii D 4 *
Gentiana clusii ssp. clusii D 4 *
Gentiana clusii subsp. rochelii D 4 *
Gentiana crassicaulis ! E *
Gentiana cruciata ! B 3 5 *
Gentiana cruciata 'Blue Cross' ! B 3 *
Gentiana cruciata subsp. phlogifolia ! B 3 5 *
Gentiana dahurica L 4 *
Gentiana dahurica var. dahurica ! L 3 *
Gentiana decumbens A *
Gentiana depressa L *
Gentiana dinarica A 3 5 *
Gentiana divisa B *
Gentiana fischeri A *
Gentiana freyniana J *
Gentiana gelida L *
Gentiana gracilipes ! L 3 *
Gentiana gracilis L *
Gentiana grossheimii A *
Gentiana kurroo B *
Gentiana lagodechiana A *
Gentiana ligustica A 5 *
Gentiana linearis L *
Gentiana loderi A *
Gentiana lutea E *
Gentiana macrophylla ! J 2 *
Gentiana macrophylla subsp. fetisowii J *
Gentiana makinoi 'Luis Easy Blue' J
Gentiana occidentalis A 5 *
Gentiana olgae A *
Gentiana olivieri L *
Gentiana pannonica E 2 *
Gentiana paradoxa G *
Gentiana paradoxa 'Blue Herald' ! B 3 *
Gentiana pneumonanthe E *
Gentiana puberulenta G *
Gentiana punctata ! E 2 *
Gentiana purpurea E 3 *
Gentiana rhodantha ? *
Gentiana rigescens G *
Gentiana rostanii K *
Gentiana saponaria ! E 2 *
Gentiana saxosa E 4 *
Gentiana scabra ! A 3 *
Gentiana scabra 'Shusui Blue' ! A 3 *
Gentiana septemfida A *
Gentiana septemfida subsp. grossheimii A *
Gentiana septemfida subsp. lagodechiana A *
Gentiana septemfida var. lagodechiana A *
Gentiana septemfida var. lagodechiana 'Hascombensis' A *
Gentiana sino-ornata A *
Gentiana sino-ornata 'Zauberglocke' A *
Gentiana sino-ornata hybrids A *
Gentiana siphonantha J 3 *
Gentiana sp. ! L *
Gentiana squarrosa ? *
Gentiana stragulata L *
Gentiana striata ? *
Gentiana stricta L *
Gentiana sylvestris G *
Gentiana terglouensis subsp. schleicheri L *
Gentiana tianschanica A *
Gentiana tibetica A *
Gentiana triflora G *
Gentiana triflora var. japonica G *
Gentiana uchiyamae L *
Gentiana veitchiorum G *
Gentiana verna E 4 *
Gentiana verna subsp. angulosa E 4 *
Gentiana verna subsp. balcanica E 4 *
Gentiana verna subsp. pontica E 4 *
Gentiana verna subsp. tergestina E 4 *
Gentiana verna x pumila E 4 *
Gentiana walujewii L *
Gentiana wutaiensis J *
Gentiana x hascombensis L *
Gentiana x stevenagensis A 2 *
Gentiana yakushimensis A *
Gentianella amarella G *
Gentianella detonsa subsp. nesophila A 3
Gentianella germanica A 3 4
Gentianopsis crinita ! K *
Gentianopsis procera ! L
Gentianopsis sp. ?
Gentianopsis virgata ! L
Geranium argenteum A
Geranium bohemicum A
Geranium bohemicum 'Orchid Blue' A
Geranium brutium L
Geranium clarkei A 2
Geranium collinum F 2
Geranium dalmaticum A
Geranium endressii 'Wargrave Pink' A
Geranium eriostemon L
Geranium harveyi A
Geranium himalayense K
Geranium macrorrhizum A
Geranium macrorrhizum 'Bevan's Variety' A
Geranium maculatum L
Geranium molle L
Geranium nodosum J
Geranium oxonianum f. thurstonianum A
Geranium palustre F
Geranium phaeum A
Geranium phaeum var. phaeum A
Geranium phaeum var. phaeum 'Samobor' A
Geranium Philippe Vapelle' ?
Geranium platyanthum L
Geranium platypetalum A 2
Geranium pratense E
Geranium pratense 'Dark Reiter' L
Geranium pratense 'Midnight Reiter' L
Geranium pratense 'Mrs. Kendall Clark' E
Geranium pratense 'Okey Dokey' E
Geranium pratense 'Striatum' E
Geranium pratense 'Victor Reiter' E
Geranium pratense var. pratense f. albiflorum E
Geranium pratense var. pratense f. albiflorum 'Galactic' E
Geranium psilostemon J
Geranium pyrenaicum L
Geranium regelii F 2
Geranium renardii A
Geranium ruprechtii F 2
Geranium sanguineum F 2
Geranium sanguineum 'Alpenglow' F 2
Geranium sanguineum 'Ankum 's Pride' F 2
Geranium sanguineum 'John Elsley' F 2
Geranium sanguineum 'Max Frei' A
Geranium sanguineum 'New Hampshire Purple' F 2
Geranium sanguineum f. nanum J 2 *
Geranium sanguineum var. striatum J 2 *
Geranium sessiliflorum K
Geranium sinense A 2
Geranium sp. K
Geranium Sweet Heidy' ?
Geranium sylvaticum A
Geranium thunbergii A
Geranium thunbergii 'Jesters Jacket' A
Geranium wallichianum A
Geranium x johnsonii 'Johnson's Blue' A
Geranium x oxonianum K
Geranium x oxonianum 'Claridge Druce' A
Geranium x oxonianum 'Katherine Adele' A
Geranium x oxonianum 'Wargrave Pink' K
Geranium yesoense K
Geranium yoshinoi A
Gerardia paupercula A
Gerbera jamesonii Bengal Series A
Gerbera nivea A
Gerbera sp. ! A
Geum Borisii' A
Geum bulgaricum B
Geum canadense K
Geum chiloense A 3
Geum coccineum A 3
Geum coccineum 'Cooky' A 3
Geum coccineum 'Koi' A 3
Geum Dolly North' A 3
Geum Feuerball' A
Geum Fire Storm' ?
Geum japonicum A
Geum Lady Stratheden' L
Geum Lionel Cox' B 3
Geum Lisanne' A
Geum macrophyllum A
Geum montanum G 2
Geum Mrs J. Bradshaw' A
Geum pentapetalum A
Geum ponticum A
Geum pyrenaicum F
Geum quellyon A 3
Geum reptans A
Geum rivale B 3
Geum rivale 'Leonard's Variety' B 3
Geum rivale 'Pink Frills' B 3
Geum triflorum A *
Geum triflorum var. ciliatum A *
Gilia aggregata L
Gilia capitata subsp. abrotanifolia A
Gilia haydenii L
Gilia rigidula L
Gilia subnuda L
Gilia superba L
Gillenia stipulata E
Gillenia trifoliata F
Gillenia trifoliata 'Pink Profusion' F
Gladiolus 'Kim' A
Gladiolus 'Purple Flora' L
Gladiolus Atom' A
Gladiolus atroviolaceus F
Gladiolus byzantinus A
Gladiolus callianthus K
Gladiolus carneus A
Gladiolus caucasicus J
Gladiolus communis A
Gladiolus communis subsp. byzantinus A
Gladiolus dalenii A
Gladiolus dubius G
Gladiolus flanaganii K
Gladiolus geardii A
Gladiolus hybrid L
Gladiolus illyricus J
Gladiolus imbricatus L
Gladiolus italicus F
Gladiolus kotschyanus F
Gladiolus murielae K
Gladiolus oppositiflorus F
Gladiolus palustris E
Gladiolus saundersii G
Gladiolus sp. E
Gladiolus tenuis J
Gladiolus trichomenifolius ?
Gladiolus tristis F
Glaucidium palmatum ! A 2 4
Glaucidium palmatum 'Album' ! A 2 4
Glaucidium palmatum var. leucanthum ! A 2 4 *
Glaucium corniculatum B
Glaucium flavum A 2
Glaucium grandiflorum K
Glaucium leiocarpum A 2
Glaucium oxylobum A 2
Glaucium sp. K
Glebionis coronaria A
Gleditsia triacanthos A 6 7
Globularia aff. repens A
Globularia bisnagarica A
Globularia cordifolia A 3
Globularia cordifolia subsp. nana B 3
Globularia incanescens J
Globularia meridionalis A 3
Globularia mix L
Globularia nudicaulis A 2
Globularia pseudonana ?
Globularia punctata A 3
Globularia repens A
Globularia sp. L
Globularia spinosa A 3
Globularia stygia A 3
Globularia trichosantha A
Globularia vulgaris A
Gloriosa modesta A
Gloriosa rothschildiana ! A
Gloriosa superba ! A
Gloriosa superba 'Rothschildiana' ! A
Glycine max A
Glycyrrhiza echinata A 7
Glycyrrhiza glabra A 7
Glycyrrhiza uralensis A 6 7
Glycyrrhiza yunnanensis A 6 7
Gnaphalium obtusifolium A 3
Gomphocarpus physocarpus A
Gomphrena globosa A
Gomphrena sp. A 2 *
Gomphrena Fireworks' A *
Gomphrena globosa 'Gnome Purple' A
Gomphrena globosa Gnome Series A
Gomphrena haageana 'Strawberry Fields' K
Gomphrena pulchella 'Fireworks' A *
Goniolimon tataricum A
Goodyera pubescens A *
Gossypium herbaceum A
Graemia aromatica N *
Grayia spinosa A
Grenadilla sp. A 6
Grevillea robusta A
Grielum grandiflorum A 7
Grindelia squarrosa K
Gunnera chilensis A 8
Gunnera tinctoria A 8
Gymnocladus dioicus A 6 7
Gynandriris sisyrinchium ! J
Gypsophila all species A
Gypsophila cerastoides A
Gypsophila elegans 'Kermesina' A
Gypsophila franzii A
Gypsophila muralis A
Gypsophila oldhamiana A
Gypsophila paniculata A
Gypsophila petraea A
Gypsophila repens A
Gypsophila repens 'Filou Rose' A
Gypsophila repens 'Rosea' A
Gypsophila sericea ?. 3
Gypsophila sp. A
Gypsophila tenuifolia J 3
Gypsophila uralensis A
Gypsophila zhegulensis A
Haberlea all species A
Haberlea rhodopensis A *
Haberlea sp. A
Habranthus brachyandrus A
Habranthus robustus A
Habranthus tubispathus A
Hackelia sp. ?
Hacquetia epipactis ! L
Haemanthus albiflos A
Hakonechloa hybrid A
Hakonechloa macra 'All Gold' A
Hakonechloa macra 'Aureola' A
Hakonechloa sp. A
Halenia deflexa ? 3
Halesia carolina C 6 7 *
Halesia monticola D *
Halesia sp. D *
Halesia tetraptera C *
Halesia tetraptera 'Silver Splash' C
Halesia tetraptera var. monticola D *
Haloragis erecta H 7 *
Haloragis erecta 'Wellington Bronze' H 2 6
Hamamelis virginiana D
Hamamelis x intermedia 'Arnold Promise' D
Hamamelis x intermedia 'Jelena' D
Hamamelis x intermedia 'Primavera' D
Hardenbergia violacea A 6 7
Hastingsia alba L
Hebe Carl Teschner' ! L
Hebe species ! L
Hebe Youngii' ! J
Hedychium spicatum A
Hedyotis longifolia A
Hedysarum alpinum B 1 6 7 *
Hedysarum boreale subsp. mackenzii B 1 6 7 *
Hedysarum grandiflorum G 6
Helenium amarum A 3
Helenium aromaticum A
Helenium autumnale B
Helenium autumnale 'Fuego' B
Helenium autumnale 'Salsa' B
Helenium bigelovii A
Helenium bigelovii 'Big Top' B
Helenium Double Trouble' B
Helenium flexuosum A
Helenium hoopesii A
Helenium hybrid B
Helenium Moerheim Beauty' B
Helenium montanum B
Helenium Sahin's Early Flowerer' B
Helenium sp. A
Helianthemum alpestre D
Helianthemum apenninum F
Helianthemum apenninum var. roseum F
Helianthemum Ben Nevis' D
Helianthemum canum A
Helianthemum canum subsp. balcanicum A
Helianthemum grandiflorum D
Helianthemum hybrid A
Helianthemum marifolium A
Helianthemum nummularium D
Helianthemum nummularium subsp. grandiflorum D
Helianthemum nummularium subsp. nummularium D
Helianthemum oelandicum subsp. alpestre D
Helianthemum oelandicum subsp. alpestris A
Helianthemum Raspberry Ripple' A
Helianthemum sp. A
Helianthus annuus A
Helianthus annuus 'Russian Giant' A
Helianthus giganteus J
Helianthus hybrid A
Helianthus Lemon Queen' J
Helianthus maximiliani L
Helianthus rydbergii ?
Helianthus salicifolius A
Helianthus sp. A
Helichrysum thianshanicum A 3
Helichrysum bracteatum A 2
Helichrysum chionophilum ! A
Helichrysum milfordiae A
Helichrysum petiolare A
Helichrysum plicatum subsp. plicatum ! A
Helichrysum sessilioides A
Helichrysum sp. A
Helichrysum thianschanicum A
Helictotrichon sempervirens ! E
Heliopsis helianthoides A
Heliopsis helianthoides 'Loraine Sunshine' A
Heliopsis helianthoides v. scabra A
Heliopsis helianthoides var. scabra 'Asahi' A
Heliopsis helianthoides var. scabra 'Bleeding Hearts' A
Heliopsis helianthoides var. scabra 'Bressingham Doubloon' A
Heliopsis helianthoides var. scabra 'Prairie Sunset' A
Heliopsis scabra A
Heliopsis sp. A
Heliotropium arborescens 'Marine' A
Helleborus 'Snowbells' ! D 7 *
Helleborus all species ! *
Helleborus argutifolius ! D 7 *
Helleborus argutifolius x sternii ! D 7 *
Helleborus foetidus ! D 7 *
Helleborus foetidus 'Gold Bullion' ! D 7 *
Helleborus foetidus 'Red Silver' ! D 7 *
Helleborus foetidus 'Sopron' ! D 7 *
Helleborus foetidus 'Variegata' ! D 7 *
Helleborus foetidus 'Wester Flisk' ! D 7 *
Helleborus hybrid ! D 7 *
Helleborus lividus ! D 7 *
Helleborus lividus subsp. corsicus ! D 7 *
Helleborus multifidus subsp. serbicus ! D 7 *
Helleborus niger ! D 7 *
Helleborus niger 'Kessen' ! D 7 *
Helleborus niger 'Potter's Wheel' ! D 7 *
Helleborus niger 'Sunset' ! D 7 *
Helleborus odorus ! D 7 *
Helleborus orientalis ! D 7 *
Helleborus orientalis 'Rainforest Mist' ! D 7 *
Helleborus orientalis subsp. guttatus ! D 7 *
Helleborus purpurascens ! D 7 *
Helleborus sp. ! D 7 *
Helleborus thibetanus ! L *
Helleborus torquatus ! D 7 *
Helleborus viridis ! D 7 *
Helleborus viridis subsp. occidentalis ! D 7 *
Helleborus x ballardiae ! D 7 *
Helleborus x hybridus ! D 7 *
Helleborus x hybridus 'Cherry Blossom' ! D 7 *
Helleborus x hybridus 'Picotee' ! D 7 *
Helleborus x hybridus (Party Dress Group) ! D 7 *
Helleborus x sternii (Blackthorn Group) ! D 7 *
Helonias bullata A 3
Helonias orientalis A *
Heloniopsis orientalis A *
Hemerocallis 'Happy Returns' A
Hemerocallis Cherry Ripe' J
Hemerocallis Chicago Apache' A
Hemerocallis flava F
Hemerocallis hybrid A
Hemerocallis Hyperion' A
Hemerocallis lilioasphodelus F
Hemerocallis Little Cherub' A
Hemerocallis Lucky Kiss' A
Hemerocallis middendorffii F
Hemerocallis minor F
Hemerocallis Sandy Yudin' A
Hemerocallis Siloam Double Classic' A
Hemerocallis Siloam Red Ruby' A
Hemerocallis sp. J
Hemerocallis Stella de Oro' A
Hemerocallis tetraploid hybrid J 7
Hemerocallis thunbergii A
Hepatica americana ! E *
Hepatica nobilis ! E *
Hepatica nobilis f. rosea ! E *
Hepatica transsilvanica ! E *
Heptacodium miconioides ! A
Heracleum maximum L
Heracleum minimum 'Roseum ' A
Heracleum sp. ?
Heracleum sphondylium A
Heracleum sphondylium 'Pink Cloud' E
Heracleum sphondylium subsp. montanum A
Heracleum stevenii ?
Hermodactylus tuberosus C 2
Hesperantha baurii A *
Hesperantha coccinea A
Hesperis all species A
Hesperis kotschyi A 3
Hesperis lutea A
Hesperis matronalis A
Hesperis matronalis 'Variegata' A
Hesperis steveniana A
Heteropappus altaicus A
Heteropappus meyendorffii A 3
Heterotheca jonesii A
Heterotheca pumila A
Heterotheca villosa B
Heuchera all species *
Heuchera americana A
Heuchera americana 'Eco-magnififolia' A
Heuchera americana (Dale's Strain) A
Heuchera chlorantha A 3
Heuchera Crispy Curly' A
Heuchera cylindrica A 3 *
Heuchera Green Ivory' A
Heuchera grossulariifolia A
Heuchera hallii C 3
Heuchera hispida var. richardsonii A 3
Heuchera hybrid A 3
Heuchera micrantha A
Heuchera ovalifolia A 3 *
Heuchera parishii A 3
Heuchera pulchella A 3
Heuchera richardsonii A 3
Heuchera sanguinea A
Heuchera sp. B
Heuchera versicolor A
Heuchera villosa A
Heuchera villosa 'Palace Purple' A
Heuchera villosa var. macrorhiza A 3
Heuchera x brizoides A 3
Hibiscus cannabinus A 6 *
Hibiscus cannabinus 'Amethyst' ! A 6 7
Hibiscus ludwigii A 6 7
Hibiscus militaris A
Hibiscus mix ! A 6 7
Hibiscus moscheutos ! A 6 7
Hibiscus moscheutos ?Luna Rose? ! A 6 7
Hibiscus moscheutos 'Blue River ii ' ! A 6 7
Hibiscus moscheutos 'Cranberry Crush' ! A 6 7
Hibiscus moscheutos 'Moon River' ! A 6 7
Hibiscus moscheutos 'Peppermint Schnapps' ! A 6 7
Hibiscus moscheutos 'Red Dixie Belle' ! A 6 7
Hibiscus moscheutos (Southern Belle Group) ! A 6 7
Hibiscus moscheutos subsp. palustris ! A 6 7
Hibiscus mutabilis A
Hibiscus palustris ! A 6 7
Hibiscus richardsonii A
Hibiscus sabdariffa ! A 6 7
Hibiscus sinensis A
Hibiscus sp. ! A 6 7
Hibiscus syriacus A
Hibiscus syriacus 'Blue Bird' A
Hibiscus syriacus 'Blue Satin' A
Hibiscus syriacus 'Diana' A
Hibiscus trionum A 2 6 7
Hibiscus trionum 'Simply Love' A 2 6 7
Hibiscus trionum 'Vanilla Ice' A 2 6 7 *
Hibiscus White River' A 6
Hieracium alpinum A
Hieracium aurantiacum A
Hieracium bombycinum A
Hieracium glaucinium ssp. similatum ?
Hieracium lanatum A
Hieracium maculatum J 3
Hieracium maculatum 'Leopard' J 3
Hieracium maculatum ssp. maculatum J 3
Hieracium mixtum A
Hieracium pachylodes A
Hieracium pachylodes subsp. floccivelatum A
Hieracium pannosum K
Hieracium pilosella A
Hieracium scotostictum A
Hieracium sp. J *
Hieracium tomentosum B
Hieracium venosum ? 3
Hieracium villosum J 3
Hieracium waldsteinii A
Hierochloe odorata A *
Hippeastrum Sydney' A *
Hippophae rhamnoides G 4
Holodiscus discolor L
Homogyne alpina A
Hormathophylla spinosa A 3
Horminum pyrenaicum A
Hornungia alpina A
Hornungia alpina 'Icecube' A
Hosta 'Diamond Tiara' A
Hosta Abiqua Drinking Gourd' A
Hosta Antioch' A
Hosta August Moon' A
Hosta Aureomarginata' (montana) A
Hosta Beatrice' A
Hosta Blue Angel' (sieboldiana) A
Hosta Blue Boy' A
Hosta Blue Cadet' A
Hosta Blue Moon' (Tardiana Group) A
Hosta Blue Umbrellas' (siebold. hyb) A
Hosta Bressingham Blue' A
Hosta Bright Lights' (tokudama) A
Hosta Calibur' A
Hosta capitata A
Hosta Carol' (fortunei) A
Hosta Chinese Sunrise' A
Hosta Christmas Tree' A
Hosta Colossal' A
Hosta Dorothy Benedict' A
Hosta El Nino' A
Hosta Elsley Runner' A
Hosta Empress Wu' A
Hosta Fall Bouquet' (longipes var. Hypoglauca) A
Hosta fortune 'Minuteman' A
Hosta fortunei 'Aurea' A
Hosta fortunei var. aureomarginata A
Hosta fortunei var. hyacinthina A
Hosta fortunei var. rugosa A
Hosta fortunei var. stenantha A
Hosta Fragrant Blue' A
Hosta Francee' (fortunei) A
Hosta Frances Williams' (sieboldiana ) A
Hosta Fringe Benefit' A
Hosta Frosted Jade' A
Hosta Ginko Craig' A
Hosta Gold Edger' (tokudama) A
Hosta Golden Medallion' (tokudama) A
Hosta Golden Sceptre' A
Hosta Golden Tiara' A
Hosta Green Eyes' (sieboldii) A
Hosta Hakujima' (sieboldii) A
Hosta Halcyon' (Tardiana Group) A
Hosta hybrid A
Hosta Hydon Sunset' A
Hosta Inniswood' A
Hosta japonica f. angustifolia A
Hosta June' (Tardiana Group) A
Hosta Kabitan' A
Hosta kikutii A
Hosta lancifolia A
Hosta Let's Streak' A
Hosta Little White Lines' A
Hosta Love Pat' A
Hosta Minima' A
Hosta minor A
Hosta Minuteman' (fortunei) A
Hosta montana A
Hosta nakaiana 'Golden Tiara' A
Hosta Neat Splash' A
Hosta OHS Calamari' A
Hosta Pacific Blue Edger' A
Hosta Paul's Glory' A
Hosta Piedmont Gold' A
Hosta pycnophylla A
Hosta pygmaea A
Hosta rectifolia A
Hosta Rock Princess' A
Hosta Sagae' A
Hosta Sea Sprite' A
Hosta seiboldiana 'Ginko Craig' A
Hosta seiboldiana f. kabitan A
Hosta seiboldiana var. elegans A
Hosta Serendipity' A
Hosta sieboldiana A
Hosta sieboldiana var. glauca A
Hosta Snow Flakes' (sieboldii) A
Hosta sp. A
Hosta Starburst' A
Hosta Sum and Substance' A
Hosta Sun Power' A
Hosta Swarthmore Surprise' A
Hosta Tardiana Group A
Hosta Tiny Tears' A
Hosta tokudama A
Hosta tsushimensis A
Hosta ventricosa A
Hosta venusta A
Hosta Wogon' (sieboldii) A
Hosta X rated' A
Hosta Yellow Splash Rim' A
Hosta Zageblue' A
Hosta Zounds' A
Houstonia caerulea A
Houstonia longifolia A
Houstonia tenuifolia A
Hoya miniata A
Hunnemannia fumariifolia A
Hutchinsia all species A
Hutchinsia alpina A
Hutchinsia alpina ?Icecube' A
Huynhia pulchra C
Hyacinthella pallasiana L *
Hyacinthoides cedretorum ?
Hyacinthoides hispanica J
Hyacinthoides non-scripta F 3
Hydrangea arborescens G
Hydrangea aspera subsp. sargentiana A
Hydrangea sargentiana A
Hydrangea serrata A 3
Hydrangea serrata 'Koreana' A 3
Hydrastis canadensis ! L 8
Hydrophyllum canadense ! G
Hydrophyllum virginianum J
Hylomecon japonica ! E 4 *
Hylotelephium maximum A 3
Hymenolaena badachschanica ?
Hymenoxys acaulis A
Hymenoxys cooperi A
Hymenoxys grandiflora A
Hymenoxys herbacea A
Hymenoxys hoopesii A
Hymenoxys integrifolia ?
Hymenoxys sp A
Hymenoxys torreyana A
Hyoscyamus albus A 2 *
Hyoscyamus niger A 4 7 *
Hypericum adenotrichum A
Hypericum androsaemum A
Hypericum androsaemum 'Albury Purple' A
Hypericum androsaemum f. variegatum A
Hypericum androsaemum f. variegatum 'Mrs Gladis Brabazon' A
Hypericum ascyron E 3
Hypericum ascyron var. pyramidatum A
Hypericum athoum A
Hypericum aviculariifolium subsp. uniflorum K
Hypericum bupleuroides ?
Hypericum canadense J 3
Hypericum cerastioides E
Hypericum inodorum K
Hypericum kalmianum L
Hypericum kalmianum 'Ames' L
Hypericum kamtschaticum A
Hypericum kiusianum var. yakusimense A
Hypericum lancasteri A
Hypericum olympicum ! A 4
Hypericum olympicum f. grandiflorum ! A 4
Hypericum olympicum f. uniflorum 'Citrinum' ! A 4
Hypericum orientale A
Hypericum perforatum K
Hypericum prolificum A
Hypericum pseudopetiolatum var. yakusimense A
Hypericum pyramidatum A
Hypericum sp. L
Hypericum tomentosum A
Hypericum uniflorum K
Hypericum virginicum A
Hypericum yakusimense A
Hypochaeris maculata K
Hypochaeris uniflora B
Hypoxis hirsuta A *
Hyssopus officinalis A 2
Hyssopus officinalis subsp. aristatus A 2
Hysteria patula *
Iberis all species A
Iberis amara A
Iberis aurosica A
Iberis aurosica ssp. nana A
Iberis gibraltarica A 3
Iberis gibraltarica 'Chill Lavender' A 3
Iberis linifolia A
Iberis pruitii A
Iberis saxatilis A
Iberis saxatilis 'Pygmaea' A
Iberis sempervirens F
Iberis sempervirens 'Schneeflocke' B
Iberis sempervirens 'Snowflake' B
Iberis simplex A 3
Iberis sp. J
Iberis taurica A 3
Iberis umbellata A 2
Ilex all species L
Ilex glabra ! L 6 8
Ilex verticillata L 8 *
Ilex x meserveae L
Iliamna remota A 6 *
Iliamna rivularis A 6 *
Impatiens balfourii ! A
Impatiens capensis J
Impatiens glandulifera L
Impatiens pallida A
Impatiens parviflora A
Incarvillea all species *
Incarvillea arguta A
Incarvillea compacta J
Incarvillea delavayi A
Incarvillea delavayi 'Alba' A
Incarvillea delavayi 'Bee's Pink' A
Incarvillea delavayi 'Snowtop' A
Incarvillea grandiflora A
Incarvillea himalayensis 'NtSama ' A
Incarvillea mairei A
Incarvillea mairei 'Alba' J
Incarvillea mairei var. grandiflora A
Incarvillea olgae A
Incarvillea sinensis A
Incarvillea sinensis 'Cheron Pink' A
Incarvillea sinensis 'Cheron' A
Incarvillea sp. A
Incarvillea younghusbandii A
Incarvillea zhongdianensis A
Indigofera kirilowii A 7
Indigofera pseudotinctoria A 1 6 7
Indigofera sp. L
Inula acaulis A
Inula candida A
Inula ensifolia A
Inula ensifolia 'Compacta' A
Inula helenium A
Inula helenium 'Goliath' A
Inula hookeri L
Inula macrophylla L
Inula magnifica A
Inula montana A
Inula orientalis A
Inula racemosa A
Inula racemosa 'Sonnenspeer' A
Inula rhizocephala A
Inula royleana A 3
Inula salicifolia A
Inula salicina A
Inula sp. A
Ipheion uniflorum F 4
Ipomoea alba A 6 7
Ipomoea batatas A 6 7
Ipomoea coccinea A 6 7
Ipomoea hybrid A 6 7
Ipomoea leptophylla A 6 7
Ipomoea lindheimeri A 6 7
Ipomoea lobata A 6 7
Ipomoea purpurea A 6 7
Ipomoea purpurea 'Milky Way' A 6 7
Ipomoea purpurea 'Grandpa Ott's' A 6 7
Ipomoea purpurea 'Heavenly Blue' A 6 7
Ipomoea purpurea 'Milky Way' A 6 7
Ipomoea purpurea 'Split Second' A 6 7
Ipomoea quamoclit A 6 7
Ipomoea sp. A 6 7
Ipomoea tricolor A 6 7
Ipomoea tricolor 'Blue Star' A 6 7
Ipomoea tricolor 'Flying Saucers' A 6 7
Ipomoea x multifida A 6 7
Ipomoea x sloteri A 6
Ipomopsis aggregata A 1
Ipomopsis rubra A 1
Iris all species L *
Iris anglica C 7 *
Iris aphylla A *
Iris arctica L 7 *
Iris arenaria E *
Iris astrachanica L *
Iris biversata L 7 *
Iris Black Gamecock' A *
Iris bloudowii L *
Iris bucharica E 7 *
Iris bulleyana A 3 *
Iris Caesar's Brother' A 3 7 *
Iris carthaliniae E 7 *
Iris chrysographes 'Nigra ' J *
Iris clarkei J 3 7 *
Iris collettii L 7 *
Iris confusa L 7 *
Iris cristata 'Alba' G 7 *
Iris cross L 7 *
Iris decora ! J 7 *
Iris delavayi G *
Iris dichotoma A 7 *
Iris domestica A 3
Iris domestica 'Pink Profusion' A 3
Iris douglasiana H *
Iris douglasiana 'Alba' F *
Iris douglasiana hybrid F *
Iris douglasiana x innominata F *
Iris ensata L 7 *
Iris ensata 'Alba' L 7 *
Iris ensata 'Eden's Paintbrush' L 7 *
Iris ensata 'Geisha Girl' L 7 *
Iris ensata 'Henry's White' L 7 *
Iris ensata 'Lapetus' L 7 *
Iris ensata 'Rose Queen' L 7 *
Iris foetidissima L 7 *
Iris fulva ! C *
Iris gracilipes L *
Iris graeberiana B 3 7 *
Iris graminea E 6 7 *
Iris graminifolia A 3 7 *
Iris halophila E 7 *
Iris Heather Carpet' L 7 *
Iris histrioides x winogradowii L *
Iris hookeri L 7 *
Iris humilis L *
Iris hybrid L 7 *
Iris iberica L 7 *
Iris illyrica E 6 7 *
Iris innominata C 7 *
Iris japonica G 7 *
Iris kaempferi L 7 *
Iris kamaonensis D 7 *
Iris lactea L 7 *
Iris laevigata E 6 7 *
Iris laevigata 'Variegata' E 6 7 *
Iris latifolia C 7 *
Iris louisianica 'Dorothea K. Williamson' A *
Iris lutescens A 7 *
Iris maackii E 6 7 *
Iris magnifica L 7 *
Iris magnifica 'Agalik' L 7 *
Iris magnifica 'Alba' L 7 *
Iris masiae A *
Iris milesii G 2 *
Iris missouriensis L 7 *
Iris My Gold' E 7 *
Iris ochroleuca C 7 *
Iris orchioides L 6 7 *
Iris orientalis C 7 *
Iris Pacific Coast Hybrids G 7 *
Iris pallida subsp. illyrica E 6 7 *
Iris Pink Haze' A 3 7 *
Iris planifolia ! L *
Iris prismatica 'Alba' L *
Iris pseudacorus E 3 6 7 *
Iris pseudacorus 'Variegata' E 3 6 7 *
Iris pumila E 7 *
Iris reichenbachii E 6 7 *
Iris reticulata D *
Iris rosenbachiana 'Varzob' G 7 *
Iris Ruffled Velvet' E 6 7 *
Iris ruthenica L *
Iris sanguinea E 6 7 *
Iris scariosa L *
Iris setosa L 7 *
Iris setosa 'Alba' L 7 *
Iris setosa var. arctica L 7 *
Iris setosa var. canadensis L 7 *
Iris setosa var. hookeri L 7 *
Iris setosa var. nana L 7 *
Iris sibirica A 3 7 *
Iris sibirica 'Alba' A 3 7 *
Iris sibirica 'Butter and Sugar' A 3 7 *
Iris sibirica 'Ego' A 3 7 *
Iris sibirica 'Outset' A 3 7 *
Iris sibirica 'Shirley Pope' A 3 7 *
Iris sibirica 'White Swirl' A 3 7 *
Iris sibirica hybrid A 3 7 *
Iris sintenisii E 7 *
Iris sp. G 7 *
Iris spuria E 7 *
Iris spuria hybrid E 7 *
Iris spuria ssp. musulmanica E 7 *
Iris spuria ssp. musulmanica E 7 *
Iris spuria subsp. carthaliniae E 7 *
Iris spuria var. halophila E 7 *
Iris suaveolens 'Rubromarginata' L *
Iris tectorum A 3 7 *
Iris tectorum 'Alba' A 3 7 *
Iris typhifolia A *
Iris unguicularis subsp. cretensis C *
Iris Uralba Gold' L *
Iris variegata E 6 7 *
Iris versicolor A 3 *
Iris versicolor 'Blue Light' L 7 *
Iris versicolor 'Mint Fresh' A 3 *
Iris West Coast hybrid H *
Iris willmottiana L *
Iris winogradowii L *
Iris x germanica L 7 *
Iris x norrisii A 3
Iris x pseudacorus E 3 6 7 *
Iris xiphioides C 4 7 *
Isatis glauca A 2 *
Isatis indigotica A
Isatis sp. A
Isatis tinctoria A 2 *
Isodon japonicus ?
Isolepis cernua A 3 *
Isophysis tasmanica ! J 3 *
Isopyrum thalictroides ! E
Isotoma axillaris A
Ixeris dentata var. alpicola K
Ixiolirion pallasii F
Ixiolirion sp. ! L
Ixiolirion tataricum F
Ixiolirion tataricum var. tataricum F
Jasione amethystina A
Jasione crispa A
Jasione crispa subsp. amethystina A
Jasione dentata A
Jasione heldreichii A
Jasione humilis A
Jasione jankae A
Jasione laevis A
Jasione montana A
Jasione perennis A
Jasione sp. L
Jeffersonia diphylla ! E *
Jeffersonia dubia ! E *
Jovellana sinclairii A
Jovibarba heuffelii A
Jovibarba heuffelii 'Sundancer' A
Jovibarba sobolifera A 3
Juglans cinerea L
Juncus effusus A 3
Junellia micrantha L 2
Junellia wilczekii L 2
Juniperus horizontalis H 7 *
Juno bucharica E 7 *
Juno caucasica A *
Jurinea cadmea A
Jurinea consanguinea A
Jurinea mollis F
Jurinella moschus A
Jurinella moschus subsp. moschus A
Jurinella moschus subsp. pinnatisecta A
Kalimeris incisa A *
Kalimeris incisa 'Blue Star' A *
Kalimeris mongolica A
Kalmia angustifolia A 3 *
Kalmia polifolia A 3 *
Kalmia procumbens E
Kalmia sp. 3 *
Kalopanax septemlobus ! J
Kennedia coccinea A *
Kennedia prostrata A *
Kernera saxatilis A
Kirengeshoma koreana ! J *
Kirengeshoma palmata ! J *
Kirengeshoma palmata Koreana Group ! J *
Kirengeshoma sp. A
Kitaibelia sp. L
Kitaibelia vitifolia A 2 6
Knautia arvensis F
Knautia avarensis subsp. avarensis A
Knautia dipsacifolia A
Knautia macedonica A 3
Knautia macedonica 'Thunder and Lightning' A 3
Knautia sp. ?
Knautia sylvatica ?
Kniphofia 'Flamenco' B
Kniphofia 'Mango Popsicle' A
Kniphofia 'Pineapple Popsicle' A
Kniphofia caulescens B
Kniphofia Dwarf Hybrids' B
Kniphofia ensifolia A
Kniphofia ensifolia subsp. ensifolia A
Kniphofia Little Maid' B
Kniphofia Orange Blaze' A
Kniphofia Pfitzer Hybrid' B
Kniphofia pumila B
Kniphofia ritualis A
Kniphofia sp. B
Kniphofia thomsonii var. snowdenii A
Kniphofia Tnknibp' *
Kniphofia Toffee Nosed' A
Kniphofia Toyland Hybrids' B
Kniphofia triangularis A 3
Kniphofia tuckii A
Kniphofia uvaria B
Koeleria cristata A
Koeleria glauca B
Koeleria macrantha A
Koeleria vallesiana 'Mountain Breeze' A 3
Koelreuteria paniculata D 6
Koelreuteria sp. G 6
Kolkwitzia amabilis A
Korolkowia sewerzowii ! L *
Kosteletzkya virginica A
Lablab purpureus A
Lablab sp. A
Laburnum alpinum A 6 7 *
Laburnum anagyroides A 6 7 *
Laburnum sp. A 6 7
Laburnum x watereri 'Fastigiata' L
Lachenalia ensifolia A 3
Lachenalia corymbosa A
Lactuca sibirica A
Lagerstroemia 'Gamad I' A
Lagerstroemia indica A
Lagerstroemia indica 'Bellini Grape' A
Lagerstroemia indica 'Congrabel' A
Lagerstroemia indica (Supersonic hybrid) A 6
Lagerstroemia sp. A
Lagurus ovatus K
Lamium amplexicaule A
Lamium armenum subsp. sintenisii A
Lamium sp. L
Lamprocapnos spectabilis ! E
Lamprocapnos spectabilis 'Valentine' ! E
Lantana camara A
Lantana sp. A
Lapathum venosus L
Lapeirousia divaricata C
Lapeirousia laxa A 3
Larix gmelinii J *
Larix kaempferi L
Larix laricina J
Laserpitium gallicum E
Laserpitium latifolium E
Laserpitium siler A
Laserpitium sp. E
Lasianthus hirsutus H
Lathyrus aureus A 6 7
Lathyrus cicera A 7
Lathyrus davidii A 1 2 6 7 *
Lathyrus japonicus A 1 6 7
Lathyrus latifolius A 1 2 6 7 *
Lathyrus latifolius 'Albus' A 1 2 7 *
Lathyrus latifolius 'White Pearl' A 1 2 7 *
Lathyrus laxiflorus A 1 2 6 7 *
Lathyrus odoratus A 1 2 6 7 *
Lathyrus odoratus 'Rose Pearl' A 1 2 6 7 *
Lathyrus rotundifolius A 1 6 7 *
Lathyrus sativus A 7
Lathyrus sp. A 1 6 7 *
Lathyrus sylvestris A 1 6 7 *
Lathyrus tingitanus A 1 6 7 *
Lathyrus tingitanus 'Roseus' A 1 6 7 *
Lathyrus tuberosus A 1 6 7 *
Lathyrus vernus F 1 6 7 *
Lathyrus vernus 'Alba' F 1 6 7 *
Lathyrus vernus 'Alboroseus ' F 1 6 7 *
Lathyrus vernus 'Rainbow' F 1 6 7 *
Lathyrus vernus 'Rosenelfe' F 1 6 7 *
Lathyrus vernus var. albus F 1 6 7 *
Laurentia axillaris A
Laurentia sp. ? 3
Laurentia tenella L
Lavandula angustifolia B
Lavandula angustifolia 'Hidcote' B
Lavandula angustifolia 'Jean Davis' B
Lavandula angustifolia 'Munstead' B
Lavandula angustilfolia 'Royal Velvet' B
Lavandula multifida E
Lavandula multifida 'Spanish Eyes' E
Lavandula sp. B
Lavandula stoechas B
Lavandula stoechas subsp. pedunculata B
Lavandula vera B
Lavatera arborea A
Lavatera cachemiriana A
Lavatera rosea A
Lavatera sp. A
Lavatera tauricensis A
Lavatera thuringiaca A
Lavatera trimestris A
Lavatera trimestris 'Silver Cup' A
Lavatera x clementii 'Barnsley' A
Lavatera x clementii 'Barnsley' A
Lavauxia triloba A
Layia glandulosa A
Layia platyglossa A
Leavenworthia exigua A
Ledum all species 3 *
Ledum groenlandicum D 3 *
Ledum sp. D 3
Leibnitzia anandria A
Leibnitzia nepalensis A
Lembotropis nigricans A 1 6 7
Leonotis leonurus A
Leonotis ocymifolia A
Leontodon montanus ? 3
Leontodon sp. ? 3
Leontopodium albogriseum ?
Leontopodium alpinum A 3
Leontopodium alpinum subsp. nivale A 3
Leontopodium alpinum subsp. pamiricum A
Leontopodium andersonii A
Leontopodium calocephalum L
Leontopodium coreanum A
Leontopodium discolor A
Leontopodium fedtschenkoanum A
Leontopodium franchetii A
Leontopodium haplophylloides ?
Leontopodium hayachinense L
Leontopodium hayachinense subsp. miyabeanum L
Leontopodium himalayanum L
Leontopodium jacotianum L
Leontopodium jamesonii A 3
Leontopodium japonicum L
Leontopodium kamtschaticum L
Leontopodium kurilense L
Leontopodium linearifolium A
Leontopodium longifolium A
Leontopodium monocephalum A 3
Leontopodium nanum A 3
Leontopodium nivale A 3
Leontopodium nivale subsp. alpinum A 3
Leontopodium nivale subsp. alpinum 'Everest' A 3
Leontopodium nivale subsp. nivale A 3
Leontopodium ochroleucum L
Leontopodium ochroleucum var. campestre A
Leontopodium palibinianum A
Leontopodium pusillum A
Leontopodium sikkimense ?
Leontopodium souliei A
Leontopodium sp. L
Leontopodium stoechas ?
Leontopodium stracheyi L
Leonurus cardiaca A
Leonurus sibiricus A
Lepargyrea argentea J
Lepidium meyenii A
Lepidium peruvianum A
Leptandra sibirica A
Leptarrhena pyrolifolia A 3
Leptodermis oblonga A 4
Leptospermum scoparium 'Kiwi' (Nanum Group) A
Lespedeza bicolor A 6 7 *
Lespedeza capitata A 6
Lespedeza sp. A 1 6 7 *
Lespedeza thunbergii A 6 7
Lespedeza thunbergii 'Gibraltar' A 6 7
Lespedeza thunbergii 'Summer Beauty' A 6 7
Lespedeza violacea A 1 6 7 *
Lesquerella all species A
Lesquerella arctica A
Lesquerella arctica var. purshii A
Lesquerella kingii A
Lesquerella purshii A
Lesquerella sp. ? 3 4
Leucanthemella serotina A
Leucanthemopsis alpina A
Leucanthemum sp. A
Leucanthemum vulgare A
Leucanthemum x superbum A
Leucanthemum x superbum 'Highland White Dream' A
Leucanthemum x superbum 'Ice Star' A
Leucanthemum x superbum 'Sunny Side Up' A
Leucojum aestivum L
Leucojum aestivum 'Gravetye Giant' L
Leucojum autumnale A
Leucojum vernum ! C *
Leucojum vernum var. carpathicum ! C
Leucothoe catesbaei K
Leuzea carthamoides A
Leuzea centauroides A
Leuzea rhapontica K
Levisticum officinale A
Levisticum scoticum A
Lewisia brachycalyx C
Lewisia columbiana E
Lewisia cotyledon J
Lewisia cotyledon (Ashwood Strain) G
Lewisia leeana L
Lewisia Little Peach' L
Lewisia Little Plum' L
Lewisia longipetala E
Lewisia longipetala ex 'Little Snowberry' E
Lewisia nevadensis L
Lewisia nevadensis 'Alba' L
Lewisia nevadensis 'Rosea' L
Lewisia pygmaea A
Lewisia pygmaea x sierrae E 4
Lewisia rediviva ! L
Lewisia rediviva x pygmaea ! L
Lewisia sierrae A
Lewisia stebbinsii F
Lewisia tweedyi C 4 *
Leycesteria formosa A
Leymus arenarius A
Liatris aspera J
Liatris cylindracea J
Liatris cylindrica J
Liatris ligulistylis J
Liatris punctata J
Liatris pycnostachya A
Liatris scariosa J
Liatris sp. J
Liatris spicata A
Liatris spicata 'Alba' A
Liatris spicata 'Floristan Weiss' A
Liatris spicata 'Kobold' A
Liatris spicata var. montana A
Ligularia alatipes A
Ligularia altaica A
Ligularia Britt Marie Crawford' A
Ligularia dentata A
Ligularia dentata 'Desdemona' A
Ligularia dentata 'Dunkellaubig' A
Ligularia dentata 'Othello' A
Ligularia fischeri A
Ligularia Gregynog Gold' D 3
Ligularia hodgsonii A
Ligularia japonica A
Ligularia Little Rocket' A
Ligularia macrophylla A
Ligularia palmatifida A
Ligularia przewalskii A
Ligularia sachalinensis A
Ligularia sibirica A
Ligularia sp. ?
Ligularia stenocephala A
Ligularia tangutica A
Ligularia The Rocket' A
Ligularia veitchiana A
Ligularia vorobievii A
Ligusticum lucidum E
Ligusticum scoticum ! G
Lilium 'Claude Shride' C
Lilium ? dalhansonii 'Mrs R.O. Backhouse' ! B 2
Lilium Acapulco' A
Lilium albanicum C
Lilium alexandrae C
Lilium amabile A
Lilium amoenum L
Lilium Asiatic Hybrids A
Lilium auratum C
Lilium bakerianum A
Lilium Black Dragon' A
Lilium bolanderi *
Lilium bulbiferum A *
Lilium bulbiferum (bulblets) A *
Lilium buschianum A
Lilium callosum A
Lilium canadense B *
Lilium candidum A
Lilium carniolicum C
Lilium Casa Blanca' A
Lilium centifolium A
Lilium cernuum A
Lilium chalcedonicum C
Lilium ciliatum C
Lilium columbianum *
Lilium concolor A
Lilium concolor var. strictum A
Lilium cordatum H *
Lilium cordifolium H *
Lilium davidii A
Lilium distichum B *
Lilium duchartrei A
Lilium fargesi A
Lilium formosanum A *
Lilium formosanum var. pricei A
Lilium Golden Splendor' A
Lilium grayi B *
Lilium hansonii B *
Lilium henryi A
Lilium humboldtii D *
Lilium japonicum C *
Lilium Karen North' A
Lilium kelleyanum *
Lilium kelloggii *
Lilium lancifolium A *
Lilium lankongense A
Lilium ledebourii C
Lilium leichtlinii A
Lilium lijiangense A
Lilium lophophorum A
Lilium mackliniae A
Lilium mackliniae 'Naga Pink' A *
Lilium mackliniae 'Saramati' A *
Lilium maculatum var. dauricum C
Lilium majoense A
Lilium maritimum *
Lilium martagon C
Lilium martagon 'Golden Morning' C
Lilium martagon f. album C
Lilium martagon var. album C
Lilium martagon var. cattaniae C
Lilium medeoloides B *
Lilium michauxii B *
Lilium michiganense B *
Lilium monadelphum B *
Lilium nanum A
Lilium nepalense A
Lilium nobilissimum A *
Lilium ocellatum D *
Lilium oxypetalum var. insigne A *
Lilium pardalinum D *
Lilium pardalinum subsp. vollmeri D *
Lilium parryi D *
Lilium parvum *
Lilium pensylvanicum B *
Lilium philadelphicum J *
Lilium philippinense A *
Lilium Pink Perfection Group A
Lilium pitkinense D *
Lilium polyphyllum C
Lilium pomponium D *
Lilium primulinum A
Lilium pumilum A
Lilium pyrenaicum L *
Lilium regale A
Lilium regale 'Album' A
Lilium rosthornii A
Lilium rubellum C
Lilium sargentiae (bulbils) *
Lilium sargentiae (seeds) A *
Lilium sp. ?
Lilium speciosum C *
Lilium sulphureum (bulbils) *
Lilium sulphureum (seeds) A *
Lilium superbum B *
Lilium szovitsianum B *
Lilium taliense A
Lilium tenuifolium A
Lilium tigrinum A *
Lilium Tiny Snowflake' A *
Lilium tsingtauense C
Lilium vollmeri D *
Lilium wallichianum A *
Lilium wardii A
Lilium washingtonianum C *
Lilium wigginsii *
Lilium x dalhansonii ! B 2
Limnanthes douglasii A
Limonium binervosum A
Limonium cosyrense A
Limonium gougetianum A
Limonium latifolium A
Limonium minutum A
Limonium nashii A
Limonium platyphyllum A
Limonium speciosum A
Linaria aeruginea A
Linaria aeruginea 'Neon Lights' A
Linaria aeruginea subsp. nevadensis A
Linaria alpina A
Linaria dalmatica A
Linaria genistifolia A
Linaria genistifolia subsp. dalmatica A
Linaria maroccana A 3
Linaria purpurea A 3
Linaria purpurea 'Alba' A 3
Linaria purpurea 'Canon Went' A 3
Linaria sp. K
Linaria supina E
Linaria tristis ?
Lindelofia anchusoides A
Lindelofia longiflora E
Lindera benzoin ! L *
Linnaea borealis ! L *
Linum altaicum A
Linum amurense A
Linum austriacum subsp. caucasicum A
Linum bulgaricum A 3
Linum capitatum L 4
Linum cilicicum A
Linum collinum A
Linum compactum F
Linum dolomiticum L
Linum elegans A
Linum flavum A
Linum flavum 'Compactum' F
Linum Gemmels Hybrid' F
Linum grandiflorum A
Linum grandiflorum 'Bright Eyes' A 1
Linum grandiflorum 'Rubrum ' A 1
Linum julicum A
Linum lewisii A 1
Linum marschallianum A
Linum mauritanicum A
Linum narbonense A
Linum perenne A 3
Linum perenne subsp. alpinum 'Alice Blue' A 3
Linum perenne subsp. lewisii A 3
Linum pubescens ?
Linum sp. ?
Linum tauricum A 3
Linum tenuifolium A
Linum usitatissimum A
Liriodendron tulipifera D 2 *
Litchi chinensis A 7
Lithospermum canescens G
Lithospermum incisum A 7 *
Lithospermum officinale A 3 4
Littonia modesta A
Lliamna remota A
Loasa nana A
Loasa triphylla var. volcanica A
Lobelia cardinalis A 3
Lobelia Compliment Scarlet' A
Lobelia Crown Royal' A
Lobelia hybrida A 3
Lobelia inflata A 3
Lobelia kalmii L 3
Lobelia kalmii 'Abby' A 3
Lobelia puberula var. simulans A
Lobelia Queen Victoria' A 3
Lobelia siphilitica A 3
Lobelia siphilitica 'Mistassinica' A 3
Lobelia siphilitica f. alba A 3
Lobelia siphilitica f. albiflora 'Alba' A 3
Lobelia spicata A 3
Lobelia x gerardii A 3
Lobelia x speciosa A
Lobelia x speciosa 'Fan Scharlach' A
Lobelia x speciosa 'Vedrariensis' A 3
Loiseleuria procumbens E
Lomatium canbyi L
Lomatium ciliolatum B
Lomatium grayi G
Lomelosia caucasica A
Lomelosia caucasica 'Perfecta Alba' A
Lonicera alpigena D 8
Lonicera canadensis ! H
Lonicera caprifolium L 8
Lonicera hybrid G
Lonicera sempervirens F 8
Lonicera sempervirens f. sulphurea 'John Clayton' G
Lonicera sp. G
Lonicera x heckrottii 'Gold Flame' L 8
Lopezia cordata A
Lopezia cordata A
Lopezia cordata 'Pretty Rose' J
Lopezia coronata A
Lopezia racemosa A
Lophospermum atrosanguineum A
Lophospermum erubescens A
Lophospermum purpusii A
Lotononis galpinii A
Lotus alpinus A
Lotus corniculatus A 7
Lotus krylovii ? 7 *
Luetkea pectinata A
Lunaria all species A
Lunaria alpina E
Lunaria annua A
Lunaria annua v. albiflora A
Lunaria annua 'Variegata' A
Lunaria annua var. albiflora 'Alba Variegata' A
Lunaria biennis A
Lunaria rediviva E
Lunaria sp. A
Lupinus sp. A
Lupinus 'The Chatelaine' A 1 6 7
Lupinus hybrid A 1 6 7
Lupinus latifolius A 1 6 7
Lupinus lepidus A 1 6 7
Lupinus lepidus var. lobbii A 1 6 7
Lupinus luteus A 1 6 7
Lupinus My Castle' (band of Nobles Series) A 1 6 7
Lupinus nootkatensis A 1 6 7
Lupinus perennis B 1 6 7
Lupinus polyphyllus A 1 6 7
Lupinus Russell Group A 1 6 7
Lupinus Russell hybrids A 1 6 7
Lupinus stiversii A 1 6 7
Lupinus subcarnosus A 1 6 7
Luzula nivea B
Luzula ulophylla A
Lychnis alpina A 3 4
Lychnis alpina 'Alba' A 3 4
Lychnis alpina 'Rosea' A 3 4
Lychnis alpina var. serpentinicola A 3 4
Lychnis apetala A
Lychnis arkwrightii A
Lychnis atropurpurea A
Lychnis chalcedonica A 3 4
Lychnis chalcedonica 'Alba' A 3 4
Lychnis chalcedonica 'Rosea' A 3 4
Lychnis chalcedonica 'Salmonea' A 3 4
Lychnis cognata A 3 4
Lychnis coronaria A 3 4 *
Lychnis coronaria 'Alba' A 3 4
Lychnis coronaria 'Angel's Blush' A 3 4
Lychnis coronaria 'Dancing Ladies' A 3 4
Lychnis coronaria 'Hoarfrost' A 3 4
Lychnis coronaria (Atrosanguinea Group) A 3 4
Lychnis coronaria (Oculata Group) A 3 4
Lychnis coronata var. sieboldii A 3 4
Lychnis flos-cuculi A 3 4
Lychnis flos-cuculi 'Little Robin' A 3 4
Lychnis flos-cuculi 'Nana' A 3 4
Lychnis flos-cuculi 'Petite Jenny' A 3 4
Lychnis flos-cuculi var. congesta A 3 4
Lychnis flos-jovis A
Lychnis flos-jovis 'Nana' A
Lychnis flos-jovis 'Peggy' A
Lychnis haageana A
Lychnis miqueliana A
Lychnis Molten Lava' A
Lychnis sieboldii A
Lychnis sp. A
Lychnis viscaria A 3 4
Lychnis viscaria 'Alba' A 3 4 *
Lychnis viscaria 'Feuer' A 3 4
Lychnis viscaria 'Firebird' A 3 4
Lychnis viscaria 'Splendens Plena ' A 3 4
Lychnis viscaria subsp. atropurpurea A 3 4
Lychnis vulgaris ?
Lychnis wilfordii A 3
Lychnis x arkwrightii 'Orange Gnome' A
Lychnis x arkwrightii 'Vesuvius' A
Lychnis x haageana A
Lychnis yunnanensis A
Lycium barbarum A 7
Lycium chinense A 7
Lycopersicon esculentum A
Lycopersicon esculentum 'Black Krim' A
Lycopersicon esculentum 'Bonny Best' A
Lycopersicon esculentum 'Cherokee' A
Lycopersicon esculentum 'Constoluto Genovese' A
Lycopersicon esculentum 'Grandma Climenhage' A
Lycopersicon esculentum 'Green Zebra' A
Lycopersicon esculentum 'Marvel Stripe' A
Lycopersicon esculentum 'Orange Bandcock' A
Lycopersicon esculentum 'Polish Linguisa' A
Lycopersicon esculentum 'Riesentraube' A
Lycopersicon esculentum 'Sweet Million' A
Lycopersicon esculentum 'Tumbler' A
Lycopersicon esculentum 'Yellow Pear' A
Lycopersicon hybrid A
Lycopodium clavatum A *
Lycopus americanus A
Lycoris radiata A *
Lysichiton camtschatcensis A *
Lysimachia atropurpurea A
Lysimachia atropurpurea 'Beaujolais' A
Lysimachia ciliata A
Lysimachia ciliata 'Firecracker' A
Lysimachia ephemerum A
Lysimachia japonica A
Lysimachia minoricensis A
Lysimachia minutissima A
Lysimachia punctata E
Lythrum alatum J
Maackia amurensis ! A 1 2 7 *
Machaeranthera coloradoensis A
Macleaya cordata C 3
Macleaya microcarpa B
Maclura pomifera A 8 *
Macronema discoidea A
Macuna sp. A
Magnolia 'Little Gem' ! L 8 *
Magnolia amoena ! G *
Magnolia ashei ! L 8 *
Magnolia campbellii ! J 8 *
Magnolia denudata 'Forrest's Pink' ! G *
Magnolia denudata 'Forrest's Pink' G 8 *
Magnolia Gold Star' ! L *
Magnolia grandiflora ! G *
Magnolia grandiflora 'Little Gem' ! G *
Magnolia kobus ! L *
Magnolia sieboldii ! L *
Magnolia species ! L 8 *
Magnolia stellata 'Royal Star' ! L 8 *
Magnolia stellata 'Gold Star' ! L 8 *
Magnolia stellata 'Gold Star' ! L 8 *
Magnolia stellata 'Royal Star' L 8 *
Magnolia tripetala ! H *
Magnolia virginiana ! L *
Magnolia wilsonii ! L 8 *
Magnolia x brooklynensis 'Yellow Bird' ! L 8 *
Magnolia x loebneri 'Merrill' ! L 8 *
Magnolia x loebneri 'Leonard Messel' ! L 8 *
Magnolia x loebneri 'Merrill' ! L 8 *
Magnolia x soulangeana ! L 8 *
Mahonia aquifolium H 8 *
Mahonia hybrid L 8 *
Mahonia repens G 8 *
Mahonia sp. ]X L 8 *
Maianthemum dilatatum ! D *
Maianthemum bifolium v. kamtschaticum ! E *
Maianthemum canadense ! D *
Maianthemum racemosum ! D *
Maianthemum stellatum ! D *
Malus baccata G 6 7 *
Malus ioensis L
Malus sargentii L
Malus toring subsp. sargentii G 6
Malva alcea A
Malva alcea var. fastigiata F
Malva arborea A
Malva cachemiriana A
Malva fastigiata F
Malva moschata A
Malva moschata 'Rosea' A
Malva moschata f. alba A
Malva officinalis A
Malva parviflora K
Malva sp. A
Malva sylvestris A
Malva sylvestris var. mauritiana 'Primley Blue' A
Malva sylvestris var. mauritiana 'Zebrina' A
Malva thuringiaca A
Mandevilla laxa A 7
Margyricarpus pinnatus ! A
Margyricarpus setosus ! A
Marrubium globosum ssp. libanoticum L
Marrubium incanum A
Marrubium libanoticum L
Marrubium libanoticum L
Marrubium sp. J
Marrubium vulgare B
Marshallia grandiflora A
Massonia depressa A
Massonia pustulata A
Matricaria breviradiata ?
Matricaria sp. A 3
Matthiola all species A
Matthiola arborescens A *
Matthiola chorassanica A
Matthiola incana A
Matthiola integrifolia A
Matthiola longipetala A 3
Matthiola longipetala subsp. bicornis A
Matthiola sp. A
Maurandella antirrhiniflora A
Maurandya barclayana A
Maurandya scandens A
Mazus reptans A 3
Meconopsis aculeata A 3 *
Meconopsis all species *
Meconopsis baileyi ! A 1 3 *
Meconopsis baileyi 'Alba' ! A 1 3 *
Meconopsis baileyi 'Hensol Violet' ! A 1 3 *
Meconopsis betonicifolia ! A 1 3 *
Meconopsis cambrica ! C *
Meconopsis cambrica 'Frances Perry' ! C *
Meconopsis cambrica var. aurantiaca ! C *
Meconopsis dhwojii K *
Meconopsis Fertile Blue Group ! C *
Meconopsis grandis A *
Meconopsis horridula B *
Meconopsis hybrid J *
Meconopsis integrifolia A 3
Meconopsis Lingholm' (Fertile Blue Group) ! C *
Meconopsis nepalensis K *
Meconopsis paniculata ! C *
Meconopsis punicea A
Meconopsis quintuplinervia ! L *
Meconopsis sp. J *
Meconopsis villosa A
Meconopsis x beamishii L *
Meconopsis x sheldonii K *
Medeola virginiana ! L 8 *
Medicago lupulina A 8 *
Medicago sativa A
Meehania cordata K
Melaleuca armillaris A *
Melampodium divaricatum A
Melampodium paludosum A
Melampyrum cristatum L *
Melandrium keiskei A
Melanoselinum decipiens A
Melica altissima 'Atropurpurea' B
Melica ciliata A
Melica nutans A
Melica uniflora E
Melilotus alba J 4
Melilotus officinalis A 7
Melinis nerviglumis 'Savannah' A
Melissa officinalis ?
Melothria scabra A
Menispermum canadense J
Menispermum dauricum J
Menispermum sp. ?
Mentzelia decapetala F
Mentzelia sp. ?
Menziesia ferruginea A
Menziesia pentandra ?
Merendera kardiya ! L *
Merremia sibirica A
Mertensia all species *
Mertensia maritima J
Mertensia maritima subsp. asiatica J
Mertensia paniculata ! A
Mertensia primuloides A
Mertensia pterocarpa A
Mertensia sibirica A
Mertensia simplicissima L
Mertensia sp. J
Mertensia virginica J
Mesembryanthemum criniflorum A
Mespilus germanica L 6 7 *
Metasequoia glyptostroboides L 7
Meum athamanticum ! F
Michauxia campanuloides A
Michauxia tchihatchewii A 2 5
Micranthes virginiensis A
Micromeria juliana A
Micromeria thymifolia D 3 4
Microseris ringens 'Girandole' A 2
Milium effusum 'Aureum' A
Mimulus cardinalis A
Mimulus cupreus A
Mimulus cupreus 'Red Emperor' A
Mimulus guttatus A
Mimulus lewisii A
Mimulus ringens A 3
Mimulus sp. A 3
Mina lobata A 6 7
Minuartia all species A
Minuartia helmii A
Minuartia laricifolia A
Minuartia laricifolia subsp. kitaibelii A
Minuartia marcescens A
Minuartia verna A
Mirabilis hirsuta A
Mirabilis jalapa A
Mirabilis jalapa 'Broken Colours' A
Mirabilis jalapa 'Red Glow' A
Mirabilis japonica A
Mirabilis multiflora A 6 7
Mirabilis sp. A
Miscanthus sinensis B
Miscanthus sinensis 'Nippon' B
Miscanthus sinensis 'Sarabande' B
Miscanthus sinensis 'Yaku-jima' B
Miscanthus sp. ?
Mitchella repens ! G *
Mitella breweri A
Mitella caulescens K
Mitella diphylla ! B *
Mitella ovalis A
Mitella pentandra E 3
Mniarum biflorum H 2
Molinia caerulea D
Molinia caerulea subsp. arundinacea D
Molinia caerulea subsp. arundinacea 'Skyracer' E
Molinia caerulea subsp. caerulea D
Molinia caerulea subsp. caerulea 'Variegata' D
Molinia sp. E
Molopospermum peloponnesiacum C 2
Moltkia doerfleri L
Moltkia petraea A 2
Moluccella laevis A
Momordica charantia A 6 7
Monarda 'Jacob Cline' A
Monarda Blaustrumpf' A
Monarda bradburiana A 3
Monarda Cambridge Scarlet' A
Monarda citriodora A
Monarda citriodora 'Bergamo' A
Monarda didyma A
Monarda didyma 'Balmalmose' A
Monarda fistulosa A 3
Monarda Lambada' A
Monarda Marshall's Delight' A 3
Monarda pectinata A
Monarda Petite Delight' A 3
Monarda Prarienacht' A
Monarda punctata A 3
Monarda Raspberry Wine' A
Monarda sp. A
Monardella odoratissima G 3 *
Monopsis debilis K
Monotropa uniflora *
Moraea alticola A
Morina longifolia A
Morina sp. ! L
Morus alba H 7 *
Morus rubra H 7
Muhlenbergia mexicana A
Muhlenbergia reverchonii A 3 *
Mukdenia rossii J
Muscari armeniacum L *
Muscari azureum L *
Muscari azureum 'Album' L *
Muscari botryoides L *
Muscari comosum F *
Muscari comosum 'Plumosum' F *
Muscari latifolium L *
Muscari neglectum F
Muscari pseudomuscari F 7 *
Muscari Superstar' A
Muscari weissi F *
Mutisia spinosa var. pulchella B
Myosotis alpestris ! A 3
Myosotis olympica ! A
Myosotis popovii A
Myosotis pygmaea A
Myosotis sylvatica A
Myrica caroliniensis ! G *
Myrica gale ! A 3
Myrica pennsylvanica ! G *
Myrrhis odorata ! L
Mystery sp. ?
Nabalus altissimus L
Napaea dioica G
Narcissus assoanus L *
Narcissus bicolor L *
Narcissus bulbocodium L *
Narcissus calcicola L *
Narcissus juncifolius L *
Narcissus Little Beauty' ! L *
Narcissus Little Gem' L *
Narcissus obesus L *
Narcissus requienii L *
Narcissus romieuxii L *
Narcissus romieuxii 'Julia Jane' L *
Narcissus rupicola L *
Narcissus serotinus L *
Nassella tenuissima F
Nasturtium sp. A
Navarretia brandegeei A
Nectaroscordum siculum B
Nectaroscordum siculum subsp. bulgaricum B
Nectaroscordum sp. J
Nemesia cheiranthus 'Shooting Stars' A 1
Nemesia coerulea A
Nemesia strumosa A
Nemophila maculata A
Nemophila menziesii A 2
Neomarica caerulea A
Nepeta cataria A
Nepeta clarkei A 2 *
Nepeta govaniana L
Nepeta grandiflora A 2
Nepeta hemsleyana J
Nepeta nepetella A
Nepeta nervosa A 2
Nepeta nervosa 'Pink Cat' A 2
Nepeta parnassica A
Nepeta sessilifolia A *
Nepeta sibirica A
Nepeta Six Hills Giant' A *
Nepeta sp. L
Nepeta subsessilis A
Nepeta teydea A
Nepeta x faasenii A
Nerine bowdenii A
Nerine Isobel' ! A *
Nerium oleander A
Neuroloma schugnanum A
Nicandra Dark Star' A
Nicandra physalodes A
Nicandra physalodes 'Black Rod' A
Nicandra physalodes 'Dark Star' A
Nicotiana acuminata A
Nicotiana alata A 3
Nicotiana alata 'Grandiflora ' A 3
Nicotiana alata 'Lavender Cloud' A 3
Nicotiana alata 'Lime Green' A
Nicotiana alata 'Roulette' A
Nicotiana alata x mutabilis 'Bella ' A 3
Nicotiana attenuata A 3
Nicotiana Aztec Sweet' A
Nicotiana Domino Series A 3
Nicotiana glauca A
Nicotiana Green Goddess' A 3
Nicotiana langsdorffii A
Nicotiana langsdorffii 'Cream Splash' A
Nicotiana Lime Green' A 3
Nicotiana mutabilis A 3
Nicotiana Nicki Series A 3
Nicotiana paniculata A
Nicotiana rustica A 3
Nicotiana sp. A
Nicotiana suaveolens A
Nicotiana sylvestris A 3
Nicotiana sylvestris 'Only the Lonely' A 3
Nicotiana x 'Starlight Dancer' A
Nicotiana x hybrida A 3
Nicotiana x sanderae A 3
Nicotiana x sanderae 'Domino Salmon Pink' A
Nierembergia hippomanica A *
Nierembergia linariifolia A
Nierembergia scoparia 'Mont Blanc' A *
Nigella damascena A 2
Nigella damascena 'Miss Jekyll Alba' A 2
Nigella damascena 'Miss Jekyll' A 2
Nigella damascena (Persian Jewels Group) A 2
Nigella hispanica A 3
Nigella nigellastrum A
Nigella orientalis A
Nigella sativa A
Nigella sp. A
Nipponanthemum nipponicum A
Noccaea fendleri subsp. glauca B
Noccaea oppositifolia A
Noccaea rotundifolia A
Noccaea sintenisii subsp. crissum A
Noccaea vesicaria A
Noccaea zaffranii A
Nolana humifusa A
Nolana paradoxa A 2
Nomocharis aperta A 3 4
Nonea lutea G *
Nonea lutea subsp. variegata G *
Nonea pulchella L
Nothofagus alpina G *
Nothofagus obliqua G
Notholirion thomsonianum A
Nothoscordum gracile A
Nuphar variegata G *
Nymphea Red Flare' A *
Nyssa sylvatica L
Ochna serrulata ! A
Ocimum basilicum *
Ocimum gratissimum 3 *
Ocimum sanctum *
Ocimum sp. ? *
Ocimum tenuiflorum *
Oclemena acuminata B
Oclemena nemoralis L
Odontarrhena obtusifolia A 3 *
Oenothera acaulis A
Oenothera acaulis var. aurea A
Oenothera biennis A 3
Oenothera caespitosa A
Oenothera caespitosa subsp. marginata A
Oenothera campylocalyx J
Oenothera Colin Porter' A
Oenothera cruciata A 3
Oenothera drummondii A
Oenothera flava A
Oenothera fruticosa subsp. glauca A
Oenothera glazioviana A 3
Oenothera kunthiana A
Oenothera Lemon Sunset' J
Oenothera lindheimeri A
Oenothera lindheimeri 'The Bride' A 2
Oenothera macrocarpa B
Oenothera macrocarpa subsp. incana 'Pewter Moon' B
Oenothera missouriensis B
Oenothera parviflora A 3
Oenothera perennis A
Oenothera rosea A
Oenothera sommemweiyae A
Oenothera sp. L
Oenothera speciosa A 2
Oenothera stricta A
Oenothera stricta 'Moonlight' A
Oenothera triloba A
Oenothera versicolor A
Oenothera versicolor 'Sunset Boulevard' A
Olsynium douglasii L
Olsynium junceum ssp. depauperatum ?
Omphalodes cappadocica A
Omphalodes kuzinskyanae ? 2
Omphalodes linifolia A 2
Omphalodes linifolia 'Venus Navel' A 2
Omphalodes lojkae A 3
Omphalodes luciliae ! A 2
Omphalodes luciliae 'Alba' ! A 2
Onobrychis cadmea A
Onobrychis montana A
Onobrychis ruprechtii A
Onobrychis scardica A
Onobrychis sp. L
Onobrychis transsilvanica A
Onobrychis viciifolia K 7
Onoclea sensibilis A *
Ononis rotundifolia A 2 6
Ononis spinosa A 1 6 7
Onopordum acanthium A 5 *
Onopordum algeriense A 2 5 *
Onopordum all species *
Onopordum boissieri L *
Onopordum carduchorum A 2 5 *
Onopordum illyricum J 3
Onopordum messeniacum A 4
Onopordum nervosum L *
Onopordum sibthorpianum A 2 5 *
Onopordum sp. A 2 5 *
Onosma all species *
Onosma arenaria L *
Onosma borysthenica E
Onosma bourgaei A
Onosma caucasica E
Onosma nana G
Onosma rigida G
Onosma sericea A
Onosma sp. E
Onosma stellulata E
Onosma taurica J
Ophiopogon planiscapus 'Arabicus' A
Ophiopogon planiscapus 'Ebony Knight' A
Ophiopogon planiscapus 'Nigra' A
Ophiopogon planiscapus 'Nigrescens' A
Oplopanax horridus L
Opuntia Claude Barr hybrid A 7 8
Opuntia compressa A 5 8
Opuntia cymochila x fragilis 'Smithwick' A
Opuntia humifusa A 5 8 *
Opuntia macrorhiza var. macrorhiza A 8
Opuntia phaeacantha A 7 8
Opuntia polyacantha A 5 8
Opuntia sp. A 7 8
Opuntia tortispina A 7 8
Orbea variegata A
Orchis militaris ! 3 *
Oreomecon alpinum A 3
Oreomecon nudicalis A 3
Origanum all species *
Origanum creticum A
Origanum Kent Beauty' B
Origanum libanoticum A
Origanum rotundifolium A
Origanum sp. A
Origanum vulgare A
Origanum vulgare subsp. hirtum A
Oritrophium repens A
Orlaya grandiflora A
Ornithogalum candicans ! A 2
Ornithogalum magnum B
Ornithogalum montanum B
Ornithogalum nanum A
Ornithogalum narbonense ! L *
Ornithogalum princeps A
Ornithogalum pyrenaicum B
Ornithogalum saundersiae L
Ornithogalum sibthorpii A
Ornithogalum sigmoideum A
Ornithogalum viridiflorum B
Orostachys aggregata K 3 *
Orostachys boehmeri K 3 *
Orostachys iwarenge A
Orostachys malacophylla var. iwarenge A
Orostachys spinosa A
Orthocarpus cuspidatus A
Orthrosanthus laxus A
Orychophragmus violaceus A
Oryzopsis hymenoides A 7 *
Osmorhiza longistylis L
Osmunda regalis A *
Osteospermum barberiae var. compactum A 3
Osteospermum pluvialis 'Glistening White' A
Osteospermum sp. ?
Ostrya virginiana ! *
Ourisia macrophylla A 3
Oxalis valdiviensis *
Oxygraphis glacialis A 3
Oxypetalum coeruleum A
Oxyria digyna A
Oxytropis campestris A *
Oxytropis caucasica A 6 7 *
Oxytropis floribunda ? 6 7 *
Oxytropis fominii A 1 6 7 *
Oxytropis gaudinii A 7 *
Oxytropis halleri A 1 6 7 *
Oxytropis jacquinii A 6 7 *
Oxytropis japonica A 6 7 *
Oxytropis johannensis A 1 6 7 *
Oxytropis lambertii A 6 7 *
Oxytropis lapponica A *
Oxytropis maydelliana A 6 7 *
Oxytropis megalantha A 6 7 *
Oxytropis nana K 6 *
Oxytropis podocarpa A 6 7 *
Oxytropis ruthenica A 6 7 *
Oxytropis sericea A 6 7 *
Oxytropis sericea var. spicata A 6 7 *
Oxytropis splendens A 6 7 *
Oxytropis viscida A 3 6 7 *
Packera anonyma A
Packera aurea A 3
Packera paupercula A
Packera werneriifolia A 3
Padus maackii C 8 *
Paederota bonarota L
Paeonia ?Bernice Carr' *
Paeonia ?Capital Dome' *
Paeonia ?Duchesse d'Orleans' *
Paeonia ?Martha W.' *
Paeonia ?Meadow Lark' *
Paeonia ?Pink Princess' *
Paeonia 'Adrienne Clarkson' *
Paeonia 'Blushing Princess' *
Paeonia 'Nosegay' *
Paeonia anemoniflora *
Paeonia anomala *
Paeonia anomala subsp. anomala *
Paeonia cambessedesii *
Paeonia caucasica *
Paeonia daurica *
Paeonia daurica subsp. coriifolia *
Paeonia daurica subsp. macrophylla *
Paeonia daurica subsp. mlokosewitschii *
Paeonia delavayi *
Paeonia delavayi var. lutea *
Paeonia emodi *
Paeonia handel-mazzettii *
Paeonia He Hua Ying Ri' *
Paeonia Horizon' *
Paeonia humilis *
Paeonia hybrid *
Paeonia japonica *
Paeonia kavachensis *
Paeonia lactiflora *
Paeonia lactiflora 'A la Mode' *
Paeonia lactiflora 'Betty Warner' *
Paeonia lactiflora 'Butter Bowl' *
Paeonia lactiflora 'Carrara' *
Paeonia lactiflora 'Empress Wu's Yellow' *
Paeonia lactiflora 'Gay Paree' *
Paeonia lactiflora 'Irene May Gilbert' *
Paeonia lactiflora 'Kaw Valley' *
Paeonia lactiflora 'Krinkled White' *
Paeonia lactiflora 'Moonstone' *
Paeonia lactiflora 'Nathan' *
Paeonia lactiflora 'Paul M Wild' *
Paeonia lactiflora 'Pride of Blasdell' *
Paeonia lactiflora 'Purple Spider' *
Paeonia lactiflora 'Scatterbrain Pink' *
Paeonia lactiflora 'White Wings' *
Paeonia lactiflora hybrid *
Paeonia lutea *
Paeonia Mackinac Grand' *
Paeonia mascula *
Paeonia mascula subsp. arietina *
Paeonia mascula subsp. mascula *
Paeonia mlokosewitschii *
Paeonia mlokosewitschii hybrid *
Paeonia mollis *
Paeonia obovata *
Paeonia obovata subsp. obovata *
Paeonia obovata var. alba *
Paeonia officinalis *
Paeonia officinalis 'Anemoniflora Rosea' *
Paeonia officinalis 'Anemoniflora' *
Paeonia officinalis 'Mollis' *
Paeonia officinalis ssp. microcarpa *
Paeonia officinalis subsp. banatica *
Paeonia officinalis subsp. humilis *
Paeonia officinalis subsp. villosa *
Paeonia ostii *
Paeonia peregrina *
Paeonia Rare China' *
Paeonia rockii *
Paeonia rockii cross *
Paeonia rockii hybrid *
Paeonia Souvenir de Lothar Parlasca' *
Paeonia sp. *
Paeonia Sprite' *
Paeonia steveniana *
Paeonia suffruticosa *
Paeonia suffruticosa *
Paeonia suffruticosa 'Brandy Wine' *
Paeonia suffruticosa 'Hana-kisoi' *
Paeonia suffruticosa 'Hoki' *
Paeonia suffruticosa 'Houki' *
Paeonia suffruticosa 'Kamada-nishiki' *
Paeonia suffruticosa 'Kao' *
Paeonia suffruticosa 'Shima Nishiki' *
Paeonia suffruticosa 'Shimanishiki' *
Paeonia suffruticosa 'Yachiyo-tsubaki' *
Paeonia suffruticosa hybrid *
Paeonia suffruticosa subsp. ostii *
Paeonia suffruticosa subsp. rockii *
Paeonia suffruticosa subsp. rockii hybrid *
Paeonia tenuifolia G *
Paeonia tenuifolia subsp. biebersteiniana G *
Paeonia tenuifolia subsp. lithophila G *
Paeonia veitchii *
Paeonia veitchii var. woodwardii *
Paeonia Walter Mains' *
Paeonia wittmanniana *
Paeonia x suffruticosa subsp. rockii *
Panax chin-seng L *
Panax ginseng L *
Panax quinquefolius L *
Panax trifolius ! L *
Pancratium illyricum A
Panicum clandestinum A
Panicum miliaceum 'Violaceum' A
Panicum virgatum A
Panicum virgatum 'Heavy Metal' A
Panicum virgatum 'Rotstrahlbusch' A
Panicum virgatum 'Shenandoah' A
Papaver alboroseum A
Papaver alpinum A 3
Papaver amurense A
Papaver apokrinomenon A
Papaver atlanticum A
Papaver atlanticum 'Flore Pleno' A
Papaver bracteatum A
Papaver burseri A 3
Papaver cambricum ! C *
Papaver canescens A
Papaver chakassicum A
Papaver commutatum A 2
Papaver dahlianum A
Papaver dubium A 2
Papaver fauriei A 3 4
Papaver feddei A
Papaver fugax A
Papaver glaucum K 1 3
Papaver heldreichii A
Papaver kluanense A
Papaver lapeyrousianum L
Papaver lapponicum G
Papaver lateritium A 2
Papaver lateritium 'Flore Pleno' A 2
Papaver lateritium 'Nanum Flore Pleno' A 2
Papaver miyabeanum A 3 4
Papaver montanum A
Papaver nudicaule A 3
Papaver oreophilum A
Papaver orientale A
Papaver orientale 'Allegro' A
Papaver orientale 'Burning Heart' A
Papaver orientale 'Fruit Punch' A
Papaver orientale 'Patty's Plum' A
Papaver orientale 'Turkenlouis' A
Papaver orientale var. bracteatum A
Papaver paeoniflorum A 3
Papaver persicum A
Papaver pilosum A 2
Papaver pygmaeum H *
Papaver radicatum L
Papaver rhaeticum A 3
Papaver rhoeas A
Papaver rhoeas 'Fairy Wings' A
Papaver rhoeas 'Pandora' A
Papaver rhoeas (Shirley mix) A
Papaver rupifragum A
Papaver rupifragum 'Double Tangerine Gem' A
Papaver sendtneri A 3
Papaver somniferum A
Papaver somniferum 'Danebrog' A
Papaver somniferum 'Lauren's Grape' A
Papaver somniferum 'Pink Chiffon' A
Papaver somniferum 'Sissinghurst White' A
Papaver somniferum (Paeoniiflorum Group) A 3
Papaver somniferum double A
Papaver somniferum Laciniatum Group A
Papaver sp. G
Papaver spicatum A
Papaver suaveolens L
Papaver tauricola A
Papaver tianschanicum A
Papaver triniifolium A
Papyrus sp. A
Paradisea liliastrum L
Paradisea lusitanica L
Paradisea sp. L
Parahebe perfoliata L
Pardancanda norrisii A 3
Pardanthopsis dichotoma A 7 *
Paris quadrifolia ! E *
Parnassia fimbriata G 3
Parnassia glauca G 3
Parnassia palustris A 3
Paronychia argentea A
Paronychia kapela ?
Paronychia kapela subsp. serpyllifolia A
Paronychia serpyllifolia A
Parthenium integrifolium H
Parthenocissus quinquefolia 'Star Showers' J
Passiflora morifolia L *
Patrinia gibbosa ! J
Patrinia glabrifolia ?
Patrinia heterophylla G
Patrinia intermedia A
Patrinia japonica A
Patrinia punctiflora A
Patrinia rupestris A
Patrinia scabiosifolia ?
Patrinia sp. ! L
Patrinia triloba A
Patrinia triloba var. palmata F
Patrinia villosa A
Patrinia villosa var. japonica A
Paulownia tomentosa A 3
Pavonia hastata A
Paxistima canbyi 'Compacta ' ! *
Pectiantia breweri A
Pectiantia ovalis A
Pectiantia pentandra E 3
Pedicularis canadensis A *
Pedicularis comosa ? *
Peganum harmala A 3 *
Pelargonium capitatum A
Pelargonium endlicherianum B
Pelargonium sp. A
Pelecyphora missouriensis A 4
Peltiphyllum peltatum E 7
Peltoboykinia sp.. *
Peltoboykinia tellimoides G 3
Peltoboykinia watanabei H
Pennisetum alopecuroides B
Pennisetum alopecuroides 'Hameln' B
Pennisetum alopecuroides 'Red Head' B
Pennisetum glaucum A
Pennisetum glaucum 'Jade Princess' A
Pennisetum glaucum 'Jester' A
Pennisetum glaucum 'Purple Majesty' A
Pennisetum macrourum A
Pennisetum setaceum 'Rubrum' A *
Pennisetum setaceum 'Sky Rocket' A
Pennisetum sp. A
Penstemon 'Dark Towers' A
Penstemon 'Midnight Masquerade' ? 3
Penstemon albertinus F
Penstemon albidus F *
Penstemon all species *
Penstemon alpinus A
Penstemon angustifolius A
Penstemon arenicola H
Penstemon aridus *
Penstemon attenuatus A 3 4
Penstemon barbatus A
Penstemon barbatus 'Coccineus' A
Penstemon barbatus 'Elfin Pink' A
Penstemon barbatus 'Iron Maiden' K
Penstemon barbatus 'Navigator' A
Penstemon barbatus Pinacolada Series A
Penstemon barbatus var. praecox f. nanus A
Penstemon barbatus var. praecox f. nanus 'Rondo' A
Penstemon barrettiae F *
Penstemon caespitosus A
Penstemon calycosus J
Penstemon campanulatus J
Penstemon cardinalis J 3
Penstemon cardwellii F 3
Penstemon cardwellii 'Floyd McMullen' F 3
Penstemon cinicola G 3
Penstemon clutei G 3
Penstemon cobaea A
Penstemon compactus G 3
Penstemon confertus J
Penstemon crandallii C
Penstemon cross ?
Penstemon Crystal' J
Penstemon cyananthus F
Penstemon Dark Towers' A
Penstemon davidsonii A
Penstemon davidsonii subsp. davidsonii A
Penstemon davidsonii var. ellipticus F
Penstemon davidsonii var. menziesii A
Penstemon davidsonii var. menziesii 'Microphyllus' A
Penstemon davidsonii var. praeteritus A
Penstemon Delfts Blue Riding Hood' J
Penstemon deustus L
Penstemon digitalis A 3
Penstemon digitalis 'Husker Red' A 3
Penstemon digitalis 'Mystica' A
Penstemon eatonii L *
Penstemon ellipticus F
Penstemon eriantherus G
Penstemon eriantherus var. redactus G
Penstemon euglaucus A
Penstemon fremontii G 3
Penstemon fruticosus H
Penstemon fruticosus 'Purple Haze' A
Penstemon fruticosus hybrid G *
Penstemon fruticosus var. scouleri G *
Penstemon fruticosus var. serratus G *
Penstemon fruticosus var. serratus 'Holly' G *
Penstemon Giant Blue' A
Penstemon glaber A
Penstemon glaber subsp. alpinus A
Penstemon gormanii A
Penstemon gracilis L
Penstemon grandiflorus J
Penstemon grandiflorus 'Albus' F
Penstemon grandiflorus 'Prairie Jewel' F
Penstemon hallii A
Penstemon heterophyllus A
Penstemon hirsutus G 3
Penstemon hirsutus 'Blue Foam' G
Penstemon hirsutus 'Minima Alba ' G 3
Penstemon hirsutus f. albiflorus G 3
Penstemon hirsutus v. pygmaeus A 3
Penstemon hirsutus var. minimus G 3
Penstemon hirsutus var. pygmaeus A 3
Penstemon hirsutus var. pygmaeus f. albus A 3
Penstemon Hyacinth flowered' J
Penstemon kunthii A 3 4
Penstemon laricifolius L
Penstemon laricifolius subsp. ilifolius A 3 4
Penstemon linarioides L
Penstemon linarioides var. sileri L
Penstemon lyallii F
Penstemon mensarum L
Penstemon Mexicali hybrid A
Penstemon Mexicali hybrid 'Carillo Red' A
Penstemon multiflorus L
Penstemon newberryi A
Penstemon nitidus J *
Penstemon ovatus A
Penstemon pallidus G
Penstemon palmeri J 3 4
Penstemon parryi A
Penstemon patens G 3 6
Penstemon peckii L
Penstemon Pike's Peak Purple' A
Penstemon pinifolius A
Penstemon pinifolius 'Shades of Mango' A
Penstemon pink Chablis' J 3
Penstemon Prairie Dusk' A
Penstemon procerus G
Penstemon procerus subsp. formosus G
Penstemon procerus subsp. tolmiei G
Penstemon procerus var. brachyanthus 'Alba' G
Penstemon procerus var. micranthus G
Penstemon procerus var. procerus G
Penstemon procerus var. tolmiei A
Penstemon procerus x hybrid G
Penstemon pruinosus F
Penstemon Red Riding Hood' G
Penstemon Red Rocks' A
Penstemon richardsonii F
Penstemon richardsonii var. richardsonii F
Penstemon Rocky Mountain Blue' A *
Penstemon rostriflorus J
Penstemon rupicola A
Penstemon rupicola x cardwellii A
Penstemon rydbergii F
Penstemon scouleri G *
Penstemon secundiflorus G 3 4
Penstemon serrulatus G
Penstemon serrulatus 'Albus' G
Penstemon Six Hills' A
Penstemon smallii J 3
Penstemon sp. G 3
Penstemon spathulatus G
Penstemon spatulatus 'Wallowa Mts' G
Penstemon strictus A *
Penstemon thompsoniae var. desertipicti G 3
Penstemon tolmiei A
Penstemon tubaeflorus G 3
Penstemon uintahensis A
Penstemon unilateralis F
Penstemon venustus G 3
Penstemon virgatus subsp. asa-grayi L 1
Penstemon watsonii G
Penstemon whippleanus G 5
Penstemon wilcoxii A
Penstemon x mexicali A 3
Penstemon x mexicanus 'Sunburst Ruby' A
Pentanema ensifolium A
Penthorum sedoides L 3 *
Perilla frutescens A 3
Perilla frutescens var. crispa A 3
Perilla frutescens var. nankinensis A 3
Periploca sepium A
Persicaria bistorta E 4
Persicaria japonica var. compacta J
Persicaria orientalis A *
Persicaria orientalis 'Cerise Pearls' A *
Persicaria polymorpha J
Persicaria virginiana A
Persicaria virginiana 'Painter's Palette' A
Persicaria weyrichii L *
Petkovia orphanidea A
Petrocallis pyrenaica A
Petrocoptis all species A
Petrocoptis glaucifolia A
Petrocoptis lagascae A
Petrocoptis pyrenaica A
Petrocoptis pyrenaica subsp. glaucifolia A
Petrocoptis sp. A
Petrophytum caespitosum A
Petrophytum hendersonii L
Petrorhagia saxifraga A 3
Petroselinum crispum A 7
Petunia exserta A
Petunia x hybrida A
Peucedanum litorale A
Peucedanum rablense G
Peucedanum sp. A
Peucedanum verticillare E
Phacelia bolanderi A
Phacelia campanularia A
Phacelia sericea A
Phacelia sp. ? 2
Phacelia tanacetifolia A 2
Phagnalon saxatile A
Phalocallis coelestis A
Phaseolus coccineus A
Phaseolus coccineus 'Painted Lady' A
Phaseolus vulgaris A
Phaseolus vulgaris 'Garden of Eden' A
Phaseolus vulgaris 'Purple Peacock' A
Phedimus ellacombeanus A
Phedimus kamtschaticus A
Phedimus kamtschaticus A
Phedimus selskianus A
Phellodendron amurense L 8
Phemeranthus brevifolius A
Phemeranthus rugospermus F
Phemeranthus sp. ?
Phemeranthus thompsonii A
Philadelphus microphyllus J
Philadelphus satsumi A *
Phlomis fruticosa A
Phlomis russeliana F
Phlomis samia A
Phlomis sp. A
Phlomis tuberosa A
Phlomoides laciniata A
Phlomoides tuberosa A
Phlox bifida ! J *
Phlox bifida 'Alba' ! J *
Phlox condensata J
Phlox drummondii A 2
Phlox drummondii 'Moody Blues' A 2
Phlox hoodii G
Phlox paniculata J
Phlox paniculata 'David' J
Phlox paniculata 'Miss Jill' J
Phlox roemeriana A
Phlox sp. J
Phlox subulata A *
Phlox Tiny Bugles' ?
Phoenicaulis cheiranthoides A 2
Phormium sp. A
Photinia melanocarpa G 7
Phryma leptostachya L *
Phuopsis stylosa A 2
Phygelius 'Cherry Ripe' A
Phygelius capensis A
Phygelius hybrid A
Phygelius x rectus 'Salmon Leap' A
Phyllis nobla ?
Phyllodoce empetriformis K
Phyllodoce sp. ? 3
Physalis alkekengi A 3 8 *
Physalis virginiana A 3 8 *
Physaria all species A
Physaria alpina A
Physaria chambersii ! L
Physaria didymocarpa A
Physaria eburniflora A
Physaria kingii A
Physaria sp. A 3
Physocarpus capitatus A
Physocarpus opulifolius L
Physocarpus opulifolius ?Diablo? L
Physochlaina orientalis F
Physochlaina praealta ?
Physoplexis comosa A 2 5
Physoptychis caspica A 2
Physoptychis gnaphalodes A 2
Physostegia virginiana A
Physostegia virginiana 'Crystal Peak White' A
Physostegia virginiana f. alba A
Physostegia virginiana var. speciosa 'Variegata' A
Phyteuma angustifolium L 3
Phyteuma betonicifolium E
Phyteuma canescens L
Phyteuma charmelii A
Phyteuma comosum A 2 5
Phyteuma confusum A 3
Phyteuma cordatum A
Phyteuma graminifolium A
Phyteuma halleri L
Phyteuma hemisphaericum A
Phyteuma nigrum A
Phyteuma orbiculare B 3
Phyteuma ovatum A
Phyteuma persicifolium J
Phyteuma scheuchzeri A
Phyteuma sieberi A
Phyteuma sp. A 3
Phyteuma spicatum L 3
Phyteuma zahlbruckneri J
Phytolacca acinosa A
Phytolacca americana G 8 *
Phytolacca americana 'Silberstein' G 8 *
Phytolacca americana 'Variegata' G 8 *
Picea abies 'Excelsa' A
Picea meyeri J 7
Pieris japonica var. amamiana A 3 *
Pieris nana K
Pilosella aurantiaca A
Pilosella officinarum A
Pimpinella major 'Rosea' ! J
Pinellia pedatisecta J
Pinellia ternata L
Pinellia tripartita ! A
Pinellia tripartita 'Atropurpurea' ! A *
Pinguicula grandiflora K
Pinguicula vulgaris A *
Pinus banksiana A 7
Pinus cembra L
Pinus koraiensis 'Silveray' J *
Pinus mugo A
Pinus parviflora G
Pinus parviflora 'Gimborn's Ideal'
Pinus parviflora 'Glauca' G
Pinus pumila G
Pinus strobus G *
Pinus strobus 'Pendula' G *
Pinus sylvestris A
Piptanthus nepalensis A 6 7
Pityopsis falcata J
Plagiorhegma dubium ! D *
Plantago afra K 3
Plantago alpina A
Plantago arborescens A
Plantago asiatica 'Variegata' A 3
Plantago coronopus A
Plantago cynops K 3
Plantago juncoides A
Plantago lanceolata A 3
Plantago major B 3
Plantago major 'Atropurpurea' B 3
Plantago major 'Rosularis ' B 3
Plantago major 'Variegata' B 3
Plantago malato-belizii F
Plantago maritima subsp.serpentina A 3
Plantago neumannii A
Plantago nivalis B
Plantago psyllium ? 3
Plantago sempervirens A
Plantago serpentina A 3
Plantago sp. L
Plantago subulata A 3
Platanthera ciliaris A 3 *
Platycodon grandiflorus A
Platycodon grandiflorus 'Albus' A
Platycodon grandiflorus 'Astra White' A
Platycodon grandiflorus 'Baby Blue' A
Platycodon grandiflorus 'Double Blue' A
Platycodon grandiflorus 'Fairy Snow' (Apoyama Group) A
Platycodon grandiflorus 'Fairy White' A
Platycodon grandiflorus 'Fuji Pink' A
Platycodon grandiflorus 'Fuji White' A
Platycodon grandiflorus 'Hakone Blue' A
Platycodon grandiflorus 'Hakone Double Blue' A
Platycodon grandiflorus 'Hakone White' A
Platycodon grandiflorus 'Hakone' A
Platycodon grandiflorus 'Henisborne White' A
Platycodon grandiflorus 'Nanus' A
Platycodon grandiflorus 'Sentimental Blue' A
Platycodon grandiflorus (Apoyama Group) A
Platycodon grandiflorus var. mariesii A 3
Platycodon sp. A
Plectranthus scutellarioides A
Pleione bulbocodioides B *
Pleione formosana B *
Pleione limprichtii B *
Pleurospermum austriacum L *
Poa alpina A
Podophyllum cymosum ! H *
Podophyllum delavayi ! J *
Podophyllum emodi ! E 8 *
Podophyllum hexandrum E 4 8 *
Podophyllum peltatum ! L 8 *
Podophyllum pleianthum ! G *
Podophyllum versipellis subsp. boreale ! A *
Polanisia dodecandra A 2
Polemonium 'Blue Pearl' A 3
Polemonium amberoersii A
Polemonium boreale B
Polemonium boreale 'Heavenly Habit' B
Polemonium brandegeei A
Polemonium caeruleum A
Polemonium caeruleum 'Snow and Sapphires' A
Polemonium caeruleum f. album A
Polemonium caeruleum subsp. dissectum f. album A
Polemonium caeruleum var. himalayanum A
Polemonium californicum F
Polemonium confertum var. imium A
Polemonium elegans B
Polemonium eximium A
Polemonium flavum B
Polemonium foliosissimum A
Polemonium foliosissimum var. flavum A
Polemonium kiushianum B
Polemonium mellitum A 2
Polemonium pauciflorum A
Polemonium pauciflorum subsp. hinckleyi A
Polemonium pulcherrimum A 3
Polemonium pulcherrimum var. pulcherrimum A 3
Polemonium reptans J
Polemonium sp. B
Polemonium vanbruntiae J
Polemonium viscosum A
Polemonium yezoense A
Polemonium yezoense var. hidakanum 'Purple Rain' A
Polygala alpestris A
Polygala chamaebuxus A *
Polygala comosa A 3
Polygala major A
Polygala sp. ?
Polygonatum biflorum A 8
Polygonatum biflorum 'Nanum' A 8
Polygonatum hirtum ? 8
Polygonatum humile A 2 8 *
Polygonatum odoratum L 8 *
Polygonatum officinale L 8 *
Polygonatum prattii J *
Polygonatum pubescens ! D 8 *
Polygonatum sibiricum ! J 4 *
Polygonatum sp. D 8
Polygonatum verticillatum K *
Polygonatum zanlanscianense L 8 *
Polygonatum zanlanscianense ssp. officinalis L 8 *
Polygonum affine ?
Polygonum bistorta E 4
Polygonum bistorta 'Superbum' E 4
Polygonum japonicum var. japonicum J
Polygonum orientale A *
Polygonum persicaria A
Polygonum sp. G
Polygonum viviparum B
Polygonum weyrichii L *
Polypodium penna-marina A *
Polypodium virginianum A *
Polystichum acrostichoides A *
Polystichum tsus-simense A *
Poncirus trifoliata ! A
Pontederia cordata K *
Porteranthus stipulatus E
Porteranthus trifoliatus F
Portulaca grandiflora A
Portulaca hybrids A
Portulaca oleracea A
Portulaca umbraticola A
Potentilla alba A
Potentilla alba 'Snow White' A
Potentilla alchemilloides A
Potentilla ambigua A
Potentilla ancistrifolia var. dickinsii A
Potentilla arguta G
Potentilla argyrophylla A
Potentilla atrosanguinea A
Potentilla aurea A
Potentilla breweri A
Potentilla bruceae A
Potentilla concinna A
Potentilla coriandrifolia J 4
Potentilla crantzii A
Potentilla crantzii 'Pygmaea' A
Potentilla cuneata A
Potentilla delavayi A
Potentilla dickinsii A
Potentilla dissecta A
Potentilla dombeyi A
Potentilla drummondii A
Potentilla egedii A
Potentilla elatior subsp. pallasii ?
Potentilla eriocarpa ?
Potentilla fissa A
Potentilla fragiformis A
Potentilla fruticosa A
Potentilla fruticosa var. pyrenaica A
Potentilla Gibson's Scarlet' A
Potentilla glandulosa F
Potentilla glandulosa var. fissa A
Potentilla gracilis A
Potentilla hippiana F
Potentilla hyparctica F
Potentilla hyparctica 'Nana' F
Potentilla hyparctica subsp. nana F
Potentilla inclinata A
Potentilla kardiya A
Potentilla megalantha A 3
Potentilla Monarch Velvet' A
Potentilla multifidiformis A
Potentilla nana J 4
Potentilla nepalensis A
Potentilla nepalensis 'Miss Willmott' A
Potentilla neumanniana L
Potentilla neumanniana 'Nana' L
Potentilla nivea F
Potentilla palustris F
Potentilla pamirica A
Potentilla pensylvanica var. littoralis A
Potentilla porphyrantha A
Potentilla porphyrantha x caucasica A
Potentilla pusilla F
Potentilla recta A 3
Potentilla rupestris A 3
Potentilla rupestris var. pygmaea A 3
Potentilla sp. L
Potentilla speciosa B
Potentilla taurica ?
Potentilla thurberi A
Potentilla thurberi 'Monarch's Velvet' A
Potentilla thurberi hybrid A
Potentilla tollii J 3
Potentilla tonguei A
Potentilla tridentata A
Potentilla uniflora A
Potentilla verna L
Potentilla verna var. nana L
Potentilla villosa A
Poterium lasiocarpum A 3
Pratia angulata L
Prenanthes alba G
Prenanthes altissima L
Prenanthes trifoliolata ?
Primula acaulis E
Primula algida A
Primula all species L *
Primula alpicola A
Primula amoena A
Primula angustifolia L
Primula apennina E
Primula aurantiaca A
Primula auricula ! A
Primula auricula 'Craig Dhu' ! G
Primula auricula subsp. bauhinii ! A
Primula auricula var. albocincta ! A
Primula auriculata A
Primula Barnhaven Gold Laced Group A
Primula beesiana A
Primula brevicula A
Primula bulleyana A
Primula burmanica H
Primula Candelabra hybrid A
Primula capitata A
Primula carniolica G
Primula cawdoriana ! G
Primula chionantha ! A
Primula chungensis K
Primula clusiana A
Primula cockburniana A
Primula cordifolia ? 3 4
Primula cortusoides ! A
Primula daonensis A
Primula darialica A
Primula denticulata ! A
Primula denticulata 'Crimson Emperor' ! A
Primula denticulata 'Red Emperor' ! A
Primula denticulata 'Rubin Selection' ! A
Primula denticulata 'Rubinball' ! A
Primula denticulata var. alba ! A
Primula discolor L
Primula elatior A
Primula elatior subsp. pallasii A
Primula elliptica A
Primula erythrocarpa G
Primula farinosa A
Primula florindae A
Primula forbesii ! A 4 *
Primula frondosa D
Primula glaucescens A
Primula glutinosa A
Primula Gold-laced Group E
Primula grandis K
Primula halleri ! A
Primula heucherifolia A
Primula hirsuta E
Primula hirsuta hybrid E
Primula hybrid G
Primula involucrata ! A
Primula japonica G
Primula japonica 'Alba' G
Primula japonica 'Carminea' G
Primula japonica 'Glowing Embers ' G
Primula japonica 'Miller's Crimson' G
Primula japonica 'Postford White' G
Primula jesoana J
Primula kisoana A 3
Primula kisoana var. alba A 3
Primula latifolia G
Primula laurentiana ! A
Primula Lilian Harvey' E
Primula longiflora A
Primula luteola ! F
Primula macrocalyx A 3 4
Primula macrophylla A
Primula macrophylla var. moorcraftiana A
Primula marginata ! A
Primula marginata 'Napoleon' ! A
Primula matthioli A
Primula matthioli ssp. turkestanica A
Primula maximowiczii L
Primula meadia F *
Primula meadia f. alba F *
Primula meadia v. alba F *
Primula melanops G
Primula minima A
Primula mistassinica A
Primula mistassinica var. macropoda ! A
Primula mix G
Primula modesta A
Primula mollis A 4
Primula muscarioides A
Primula nivalis G
Primula nivalis var. colorata G
Primula obconica A 3
Primula palinuri G
Primula pallasii A
Primula parryi G 4
Primula pedemontana E
Primula poissonii A
Primula polyneura A
Primula primulina G
Primula prolifera A
Primula pulverulenta A 3
Primula rosea ! A
Primula rosea 'Gigas' ! A
Primula rosea 'Grandiflora' ! A
Primula rotundifolia ? 3 4
Primula Rowallane Rose' ! E
Primula ruprechtii L
Primula saguramica ?
Primula saxatilis ! A
Primula scandinavica A
Primula scotica A
Primula secundiflora A
Primula sieboldii ! D 2 4 *
Primula sieboldii 'Geisha Girl' ! D 2 4 *
Primula sikkimensis A *
Primula sp. G
Primula spectabilis G
Primula stricta G
Primula veris A 3 4
Primula veris hybrid A 3 4
Primula veris subsp. macrocalyx A 3 4
Primula vialii A
Primula villosa G
Primula villosa var. commutata G
Primula vulgaris E
Primula vulgaris subsp. sibthorpii E
Primula vulgaris x veris E
Primula waltonii A
Primula Wanda Group J
Primula wilsonii J 3
Primula woronowii ! A
Primula wulfeniana G
Primula x bulleesiana G
Primula x discolor L
Primula x polyantha A
Primula x pruhonicensis A
Primula x pubescens B
Primula x pubescens 'Boothman's Variety' G
Primula x pubescens 'Christine' G
Primula x pubescens 'Exhibition Blue' G
Primula x pubescens 'Mrs J.H. Wilson' G
Primula x pubescens mixed G
Primula yuparensis J
Prinsepia chinensis G 2
Prinsepia sinensis G
Prinsepia uniflora G 2
Proboscidea louisianica A
Prosartes hookeri H 3 8
Prosartes maculata D
Prosopis glandulosa A 6 *
Prospero autumnale G *
Prunella grandiflora B
Prunella grandiflora 'Alba' B
Prunella grandiflora 'Pink Loveliness' B
Prunella laciniata ! A
Prunella vulgaris A
Prunella x pinnatifida ! A
Prunus besseyi H
Prunus maackii C 8 *
Prunus Marion Jarvie's *
Prunus pumila G
Prunus sp. G
Prunus spinosa E
Prunus tomentosa L 8
Prunus virginiana H 8 *
Prunus virginiana var. demissa H 8 *
Psephellus bellus A
Pseudocydonia sinensis G 3
Pseudofumaria alba ! E 3 *
Pseudofumaria alba subsp. acaulis ! A 3 *
Pseudofumaria lutea ! E 3 *
Pseudofumaria ochroleuca ! A 3 *
Pseudognaphalium obtusifolium A 3
Pseudomertensia racemosa A
Pseudomuscari azureum L *
Ptelea trifoliata G
Ptelea trifoliata 'Aurea' G
Pterocarya fraxinifolia G 7
Pterocarya stenoptera G 7
Pterocephalus dumetorum A
Pterocephalus dumetorus A
Pterocephalus perennis A
Pterocephalus perennis subsp. perennis A
Pterocephalus pinardii A 3
Pterocephalus spathulatus G
Pterostyrax hispidus G
Ptilostemon afer A
Ptilostemon diacantha A
Ptilotrichum all species A
Ptilotrichum macrocarpum A
Ptilotrichum spinosum A 3
Ptilotrichum spinosum 'Roseum' A 3
Ptilotus exaltatus 'Joey' A
Pulicaria dysenterica A
Pulmonaria obscura A
Pulmonaria officinalis E
Pulmonaria saccharata E
Pulsatilla alba ! E 9
Pulsatilla albana ! A 9
Pulsatilla albana 'Lutea' ! A 9
Pulsatilla alpina ! A 9
Pulsatilla alpina 'Sulphurea' ! A 9
Pulsatilla alpina subsp. apiifolia ! A 9
Pulsatilla ambigua ! A 9
Pulsatilla armena ! A 9
Pulsatilla aurea ! A 9
Pulsatilla bungeana ! A 9
Pulsatilla campanella ! A 9
Pulsatilla caucasica ! A 9
Pulsatilla caucasica 'Lutea' ! A 9
Pulsatilla cernua ! A 9
Pulsatilla chinensis ! A 9
Pulsatilla dahurica ! A 9
Pulsatilla flavescens ! A 9
Pulsatilla georgica ! A 9
Pulsatilla grandis ! A 9
Pulsatilla halleri ! A 9
Pulsatilla halleri subsp. grandis ! A 9
Pulsatilla halleri subsp. slavica ! A 9
Pulsatilla halleri subsp. styriaca ! A 9
Pulsatilla mix ! L 9
Pulsatilla montana ! A 9
Pulsatilla nigricans ! L 9
Pulsatilla occidentalis ! L 9
Pulsatilla oenipontana ! L 9
Pulsatilla patens ! A 9
Pulsatilla patens subsp. flavescens ! A 9
Pulsatilla patens subsp. multifida ! A 9
Pulsatilla patens subsp. patens ! A 9
Pulsatilla pratensis ! A 9
Pulsatilla pratensis hybrid ! A 9
Pulsatilla pratensis 'Semiplena ' ! A 9
Pulsatilla pratensis subsp. bohemica ! A 9
Pulsatilla pratensis subsp. nigricans ! A 9
Pulsatilla regeliana ! A 9
Pulsatilla rubra ! A 9
Pulsatilla serotina ! A 9
Pulsatilla slavica ! A 9
Pulsatilla slavica x grandis ! A 9
Pulsatilla sp. ! L 9
Pulsatilla styriaca ! A 9
Pulsatilla sukaczewii ! A 9
Pulsatilla tatewakii ! A 9
Pulsatilla turczaninovii ! A 9
Pulsatilla ucrainica ! A 9
Pulsatilla vernalis ! A 9
Pulsatilla violacea ! A 9
Pulsatilla vulgaris ! A 9
Pulsatilla vulgaris 'Alba' ! A 9
Pulsatilla vulgaris 'Barton's Pink' ! A 9
Pulsatilla vulgaris 'Flore Pleno' ! A 9
Pulsatilla vulgaris 'Rode Klokke' ! A 9
Pulsatilla vulgaris 'Rote Glocke' ! A 9
Pulsatilla vulgaris subsp. grandis ! A 9
Pulsatilla vulgaris subsp. grandis 'Budapest Blue' ! A 9
Pulsatilla vulgaris subsp. grandis 'Papagen' ! A 9
Pulsatilla vulgaris var. gotlandica ! A 9
Pulsatilla vulgaris var. rubra ! A 9
Pulsatilla x holubyana ! A 9
Pulsatilla zimmermannii ! A 9
Puschkinia scilloides L *
Puschkinia scilloides 'Alba' L *
Puschkinia scilloides var. libanotica 'Alba' L *
Putoria calabrica D
Pycnanthemum pilosum A
Pycnanthemum tenuifolium A 3
Pycnanthemum verticillatum v. pilosum A
Pycnanthemum virginianum G
Pycnosorus globosus A 3
Pyracantha rogersiana G 7 8 *
Pyrethrum grandiflorum A
Pyrethrum James Kelway' A 3
Pyrethrum leontopodium A
Pyrethrum macrophyllum A
Pyrethrum pulchrum K
Pyrethrum sp. K
Pyrola minor ? *
Pyrola rotundifolia ? *
Pyrrosia serpens J
Pyrus calleryana 'Chanticleer' L *
Pyrus salicifolia L
Quamoclit pennata A 6 7
Quercus macrocarpa ! H
Quercus muehlenbergii A *
Quercus rubra L
Rabdosia umbrosa var. leucantha ?
Ramonda all species A
Ramonda myconi ! B 3 *
Ramonda myconi 'Rosea' ! B 3 *
Ramonda myconi var. alba ! B 3 *
Ramonda serbica ! A 3 *
Ramonda sp. ! A 3 *
Ranunculus aconitifolius ! E
Ranunculus acris 'Citrinus' ! J *
Ranunculus amplexicaulis ! E
Ranunculus bulbosus ! A
Ranunculus cortusifolius ! B
Ranunculus crenatus ! L
Ranunculus glacialis ! E 5
Ranunculus gramineus ! F
Ranunculus hybridus ! E
Ranunculus lyallii ! E
Ranunculus millefoliatus ! L *
Ranunculus montanus 'Molten Gold' ! L
Ranunculus obtusilobus ! L
Ranunculus parnassifolius ! E
Ranunculus pseudohirculus ! L
Ranunculus pyrenaeus ! E
Ranunculus sp. ! L
Ranunculus thora ! ?
Ranunculus yakushimensis ! L *
Ranzania japonica ! L *
Raoulia australis A 3
Raphanus sativus 'Rat's Tail' A
Ratibida columnifera A
Ratibida columnifera f. pulcherrima A
Ratibida columnifera f. pulcherrima 'Red Midget' A
Ratibida pinnata A
Ratibida pulcherrima A
Ratibida sp. A
Rehmannia elata A
Rehmannia elata 'Popstar' A
Rehmannia glutinosa A
Reseda alba A
Reseda lutea A
Reseda luteola A 3
Reseda odorata A
Reseda odorata 'Machet' N *
Rhamnus pumila J
Rhaponticum carthamoides A
Rhaponticum chamarensis J *
Rhaponticum coniferum A
Rhaponticum scariosum ssp. rhaponticum ?
Rheum maximowiczii ?
Rheum palmatum A
Rheum palmatum 'Atropurpureum Dissectum ' A
Rheum palmatum 'Atrosanguineum' A
Rheum palmatum var. tanguticum A
Rheum rhabarbarum K
Rheum tanguticum A 6 *
Rheum tataricum K
Rheum wittrockii ?
Rhinanthus minor G *
Rhinanthus serotinus G *
Rhinopetalum stenantherum L *
Rhipsalis pilocarpa A
Rhodiola integrifolia A 3
Rhodiola iremelica L 3
Rhodiola ishidae L
Rhodiola japonica A
Rhodiola kirilowii A 3
Rhodiola kirilowii v. rubra A 3
Rhodiola linearifolia A
Rhodiola rhodantha A 3
Rhodiola rosea A 3
Rhodiola sibirica A
Rhodiola sp. J
Rhodochiton atrosanguineum A
Rhododendron albiflorum A *
Rhododendron all species 3 *
Rhododendron April Rose' A *
Rhododendron April White' A *
Rhododendron arborescens A *
Rhododendron Barry Rodgers' A *
Rhododendron brachycarpum A *
Rhododendron brachycarpum subsp. tigerstedtii A *
Rhododendron camtschaticum ! A *
Rhododendron canadense A *
Rhododendron caucasicum A *
Rhododendron dauricum A *
Rhododendron dauricum 'Album' A *
Rhododendron dauricum 'Hokkaido' A *
Rhododendron Dexter hybrid A *
Rhododendron ferrugineum A *
Rhododendron Gibraltar' A *
Rhododendron impeditum A *
Rhododendron intermedium A *
Rhododendron kiusianum A *
Rhododendron lapponicum ! A 3 *
Rhododendron litangense A *
Rhododendron luteum A *
Rhododendron macrophyllum A *
Rhododendron micranthum A *
Rhododendron minus 'Alba' A *
Rhododendron minus var. minus (Carolinianum Group) A *
Rhododendron mucronulatum A *
Rhododendron neriiflorum A *
Rhododendron Nova Zembla' A *
Rhododendron ponticum A *
Rhododendron racemosum A *
Rhododendron reticulatum A *
Rhododendron schlippenbachii A *
Rhododendron sp. A *
Rhododendron tomentosum ! A 3 *
Rhododendron vernicosum A *
Rhododendron x intermedium A *
Rhododendron x yakushimanum A *
Rhodohypoxis baurii L
Rhodothamnus chamaecistus L *
Rhodotypos scandens *
Rhus aromatica K *
Rhus trilobata G 6 *
Rhynchelytrum repens A
Rhynchospora colorata A *
Ribes cereum L 4 8 *
Richteria leontopodium A 6 7
Ricinus communis A 6 7
Ricinus communis 'Carmencita Bright Red' A 6 7
Ricinus communis 'Carmencita Red' A 6 7
Ricinus communis 'Carmencita' A 6 7
Ricinus communis 'New Zealand Purple' A 6 7
Ricinus sp. A 6 7
Ricinus zanzibarensis A 6 7
Robinia pseudoacacia 'Bessoniana' A 6 7
Robinia pseudoacacia 'Frisia' A 6 7
Rodgersia aesculifolia A 3
Rodgersia aesculifolia var. henricii A 3
Rodgersia all species *
Rodgersia henricii A 3
Rodgersia pinnata A 3
Rodgersia pinnata 'Superba' A
Rodgersia podophylla A
Rodgersia sambucifolia A 3
Rodgersia sp. A
Rodgersia tabularis A 3
Romanzoffia tracyi ! A
Romneya coulteri F 5 *
Romulea nivalis ?
Romulea ramiflora A
Romulea sp. ?
Rosa ?Geranium? D 8 *
Rosa all species 6 7 8 *
Rosa amblyotis D 8 *
Rosa beggeriana Schrenk D 4 8 *
Rosa blanda D 8 *
Rosa camtschatica D 8 *
Rosa canina D 8 *
Rosa carolina D 8 *
Rosa carpatica D 8 *
Rosa davurica var. davurica D 8 *
Rosa ecae D 8 *
Rosa fedtschenkoana D 8 *
Rosa glauca D 8 *
Rosa laxa D 8 *
Rosa lucieae var. onoei D 8 *
Rosa maximowicziana D 8 *
Rosa mollis D 8 *
Rosa multiflora L 6 *
Rosa ovczinnikovii D 8 *
Rosa pulverulenta D 8 *
Rosa rubrifolia D 8 *
Rosa rugosa D 8 *
Rosa sp. D 8 *
Rosa villosa D 8 *
Rosa virginiana D 8 *
Rosa webbiana C 8 *
Rosa wichurana D 8 *
Rosa willdenowii D 8 *
Rosa woodsii D 8 *
Rosa x camtschatica D 8 *
Rosa xanthina C 6
Roscoea alpina A 2
Roscoea auriculata A 2
Roscoea cautleyoides A
Roscoea humeana J
Roscoea purpurea A
Roscoea schneideriana A
Roscoea scillifolia f. atropurpurea A 7
Roscoea scilloides A
Roscoea tibetica A
Rosularia chrysantha A
Rosularia libanotica A
Rosularia muratdaghensis A
Rosularia pilosa A 3 4
Rosularia sedoides A 3
Rosularia sempervivoides A
Rosularia sempervivum A
Rosularia serrata ? 3 4
Rosularia sp. ? 3
Rubus allegheniensis C *
Rubus chamaemorus L 6
Rubus odoratus J
Rubus parviflorus L
Rudbeckia amplexicaulis A
Rudbeckia fulgida A
Rudbeckia fulgida var. sullivantii 'Goldsturm' B
Rudbeckia gloriosa A
Rudbeckia hirta A
Rudbeckia hirta 'Becky' A
Rudbeckia hirta 'Cherokee Sunset' A
Rudbeckia hirta 'Cherry Brandy' A *
Rudbeckia hirta 'Indian Summer' A
Rudbeckia hirta 'Maya' A
Rudbeckia hirta 'Sahara' A
Rudbeckia Hortensis' A
Rudbeckia laciniata A
Rudbeckia laciniata 'Herbstsonne' A
Rudbeckia maxima F
Rudbeckia mix A
Rudbeckia nitida A
Rudbeckia sp. A
Rudbeckia subtomentosa A
Rudbeckia subtomentosa 'Little Henry' A
Rudbeckia triloba F
Rudbeckia triloba 'Prairie Glow' F
Ruellia caroliniensis G
Ruellia ciliata f. depressa A
Ruellia humilis G *
Ruellia simplex A
Ruellia sp. A
Ruellia tweediana 'Katie' A
Rumex acetosella A
Rumex alpinus A
Rumex maderensis ?
Rumex sanguineus A
Rumex sanguineus var. sanguineus A
Rumex venosus L
Rupicapnos africana C 4
Ruta graveolens A 2
Ruta graveolens 'Jackman's Blue' A 2
Sagina nodosa ?
Sagina sp. L
Sagittaria latifolia A 6 *
Saintpaulia hybrid A
Salix hylematica ! ? *
Salix lindleyana ! ? *
Salix myrtilloides 'Pink Tassels' ! ? *
Salix nepalensis ! ? *
Salpiglossis Casino Black' A
Salpiglossis sinuata A 2
Salpiglossis sinuata 'Bolero Mixed' A 2
Salpiglossis sp. A 2
Salvia aethiopis J
Salvia all species *
Salvia argentea A 3
Salvia austriaca A
Salvia bulleyana A
Salvia caespitosa B
Salvia candidissima A
Salvia candidissima subsp. occidentalis A
Salvia canescens var. daghestanica A 3
Salvia Cardinal Red' A
Salvia castanea A
Salvia coccinea A 3
Salvia coccinea 'Coral Nymph' A 3
Salvia coccinea 'Lady in Red' A 3
Salvia coccinea 'Summer Jewel Red' A 3
Salvia coerulea A
Salvia cyanescens L 3
Salvia daghestanica A 3
Salvia deserta A
Salvia dolichantha A 3
Salvia dorrii A
Salvia dumetorum A 3
Salvia evansiana A 3
Salvia exserta A
Salvia farinacea A
Salvia farinacea 'Evolution Violet' A
Salvia farinacea 'Victoria' A
Salvia flava A
Salvia forsskaolei B 3
Salvia fruticosa A
Salvia glutinosa A 3
Salvia greggii A
Salvia guaranitica A
Salvia guaranitica 'Black and Blue' A
Salvia hians A 3
Salvia horminum A
Salvia hybrid A
Salvia hypargeia A
Salvia japonica A
Salvia jurisicii A
Salvia lavandulifolia A
Salvia lyrata A
Salvia lyrata 'Purple Knockout' A
Salvia lyrata 'Purple Volcano' A
Salvia mekongensis A 3
Salvia miltiorrhiza A 3
Salvia nemerosa 'Caradonna' A
Salvia nemorosa A
Salvia nemorosa 'New Dimension Rose' A
Salvia nemorosa 'Ostfriesland' A
Salvia nemorosa 'Rose Queen' A
Salvia nemorosa subsp. tesquicola A 3
Salvia nutans A
Salvia officinalis A
Salvia patens B 3
Salvia patens 'Oxford Blue' B
Salvia praeclara A
Salvia pratensis A
Salvia pratensis 'Rose Rhapsody' (ballet Series) A
Salvia regeliana A
Salvia roemeriana A
Salvia scabra A
Salvia sclarea A
Salvia sclarea 'Vatican White' A
Salvia sclarea var. turkestanica A
Salvia sp. A
Salvia splendens A
Salvia splendens 'Blaze of Fire' A
Salvia splendens 'Lighthouse Red' A
Salvia staminea A
Salvia stenophylla A
Salvia stepposa A 3
Salvia subrotunda A 3
Salvia superba A
Salvia tomentosa A
Salvia transsylvanica A
Salvia uliginosa A
Salvia verticillata A
Salvia virgata A
Salvia viridis A
Salvia x 'Big Swing' A
Salvia x sylvestris A
Salvia x sylvestris 'Blue Queen' A
Salvia x sylvestris 'May Night' A
Sambucus caerulea J 6
Sambucus callicarpa J
Sambucus canadensis C
Sambucus ebulus C 8
Sambucus nigra E
Sambucus racemosa J
Sambucus sieboldiana G 8
Sandersonia aurantiaca A 3 7
Sanguinaria canadensis ! L *
Sanguinaria canadensis 'Rosea' ! L *
Sanguisorba albiflora L
Sanguisorba armena G
Sanguisorba canadensis A
Sanguisorba Chocolate Tip' A 3
Sanguisorba dodecandra K 3
Sanguisorba hakusanensis B
Sanguisorba Little Angel' K 3
Sanguisorba menziesii A
Sanguisorba minor A
Sanguisorba obtusa B
Sanguisorba officinalis A 3
Sanguisorba officinalis 'Red Thunder' A 3
Sanguisorba officinalis 'Tanna' A 3
Sanguisorba officinalis v. microcephala 'Little Angel' A 3
Sanguisorba officinalis var. microcephala 'Little Angel' A 3
Sanguisorba parviflora B
Sanguisorba purpurea B
Sanguisorba sp. L
Sanguisorba stipulata *
Sanguisorba tenuifolia B
Sanguisorba tenuifolia 'Purpurea' B
Sanguisorba tenuifolia var. alba B
Sanguisorba x tenuifolia B
Sanicula europaea ! L
Santolina chamaecyparissus 'Santa ' A
Santolina rosmarinifolia subsp. rosmarinifolia 'Primrose Gem' A
Santolina sp. L
Saponaria boissieriana A
Saponaria caespitosa L
Saponaria chlorifolia L
Saponaria cypria A
Saponaria ocymoides A 3
Saponaria ocymoides 'Rubra Compacta' A 3
Saponaria officinalis E
Saponaria pamphylica A
Saponaria pumilio E
Saponaria Rose Gnome' ?
Saponaria sp. A
Saponaria x lempergii 'Max Frei' A
Saponaria X olivana A
Sarracenia purpurea G 3 *
Saruma henryi ! E *
Satureja alpina A 3
Satureja spicata A
Sauromatum venosum A
Saururus chinensis J
Saussurea alpina J
Saussurea calcicola ?
Saussurea ceratocarpa var. depressa ! L
Saussurea discolor ?
Saussurea grandiflora ! L
Saussurea jacea ?
Saussurea nepalensis ! L
Saussurea pygmaea ?
Saussurea sp. ! L
Saxifraga 'Lilac Time' ! L *
Saxifraga 'Winifred Bevington' ! E *
Saxifraga aizoides ! D *
Saxifraga aizoon ! A 3 *
Saxifraga aizoon 'Rosea' ! A 3 *
Saxifraga all species ! *
Saxifraga arendsii ! A 3 *
Saxifraga Aureopunctata' ! E *
Saxifraga Baldensis' ! A 3 *
Saxifraga Bob Hawkins' ! E *
Saxifraga bronchialis ! L *
Saxifraga callosa ! L 3 *
Saxifraga Canis-dalmatica ' (? gaudinii) ! ? 4 *
Saxifraga cernua ! L *
Saxifraga cespitosa ! H *
Saxifraga cespitosa subsp. emarginata ! H *
Saxifraga cochlearis 'Minor' ! E *
Saxifraga cotyledon ! E *
Saxifraga crustata ! L *
Saxifraga cuneifolia ! E *
Saxifraga cymbalaria ! A *
Saxifraga diapensioides ! E *
Saxifraga exarata ! E *
Saxifraga federici-augusti subsp. grisebachii ! L *
Saxifraga ferdinandi-cobugi var. radoslavoffii ! E *
Saxifraga ferdinandi-coburgi ! E *
Saxifraga flagellaris ! A 3 *
Saxifraga granulata ! E *
Saxifraga grisebachii ! L *
Saxifraga groenlandica ! H *
Saxifraga Haagii' ! L *
Saxifraga hostii ! E *
Saxifraga hostii ssp. rhaetica ! E *
Saxifraga integrifolia ! G *
Saxifraga irrigua ! K *
Saxifraga Kabschia hybrid ! G 3 *
Saxifraga keptaniana ! L *
Saxifraga kolenatiana ! A *
Saxifraga Korund' ! L *
Saxifraga Letchworth Gem' ! L *
Saxifraga longifolia ! L *
Saxifraga lutea ! A 3 *
Saxifraga luteoviridis ! L *
Saxifraga manshuriensis ! A 3 4 *
Saxifraga marginata 'Jaroslav Horny' E *
Saxifraga Minor' ! E *
Saxifraga Mossy hybrid ! L *
Saxifraga nivalis ! A *
Saxifraga oppositifolia ! D 4 *
Saxifraga oppositifolia 'Vaccariana' ! D 4 *
Saxifraga paniculata ! A 3 *
Saxifraga paniculata 'Correvoniana' ! A 3 *
Saxifraga paniculata 'Labradorica' ! A 3 *
Saxifraga paniculata 'Laestadii' ! A 3 *
Saxifraga paniculata 'Lagraveana' ! A 3 *
Saxifraga paniculata 'Lutea' ! A 3 *
Saxifraga paniculata 'Minima' ! A 3 *
Saxifraga paniculata 'Punctata' ! A 3 *
Saxifraga paniculata 'Punctatissima' ! A 3 *
Saxifraga paniculata 'Rex' ! A 3 *
Saxifraga paniculata 'Rosea' ! A 3 *
Saxifraga paniculata 'Venetia' ! A 3 *
Saxifraga paniculata ssp. laestadii ! A 3 *
Saxifraga paniculata var. baldensis ! A 3 *
Saxifraga paniculata var. brevifolia ! A 3 *
Saxifraga paniculata var. minutifolia ! A *
Saxifraga paniculata var. paniculata ! A 3 *
Saxifraga paniculata var. petrophila ! A 3 *
Saxifraga pensylvanica ! G 3 *
Saxifraga Peter Pan' ! A *
Saxifraga porophylla ! L *
Saxifraga portae ! A 3 *
Saxifraga primuloides ! A 3 *
Saxifraga retusa subsp. augustana ! L *
Saxifraga rosacea ! A 3 *
Saxifraga rotundifolia ! A 3 *
Saxifraga sachalinensis ! E *
Saxifraga Sieberi' ! ? *
Saxifraga Southside Seedling' ! L *
Saxifraga sp. ! L *
Saxifraga sp. encrusted ! E 3 *
Saxifraga stellaris ! L *
Saxifraga stelleriana ! L *
Saxifraga stolonifera 'Maroon Beauty' ! A *
Saxifraga stribrnyi ! E *
Saxifraga sulphurea ! L *
Saxifraga tolmiei ! A *
Saxifraga tolmiei var. tolmiei ! A *
Saxifraga tricuspidata ! A *
Saxifraga Tumbling Waters' ! L *
Saxifraga umbrosa ! E *
Saxifraga Variegata Aurea' ! E 3 *
Saxifraga vayredana ! L *
Saxifraga virginiensis ! A 3 *
Saxifraga White Pixie' ! L *
Saxifraga Whitehill' ! ? *
Saxifraga x arendsii ! A 3 *
Saxifraga x arendsii 'Purple Robe' ! A 3 *
Saxifraga x boydii 'Sulphurea' ! L *
Saxifraga x fritschiana ! L *
Saxifraga x fritschiana 'Portae' ! A 3 *
Saxifraga x macnabiana ! A *
Saxifraga x patens 'Elliot's Variety' ! L *
Saxifraga x urbium ! E 3 *
Saxifraga x urbium 'Variegata' ! E 3 *
Scabiosa alpina ! A
Scabiosa atropurpurea A
Scabiosa caucasica A
Scabiosa caucasica 'Fama' A
Scabiosa caucasica 'Perfecta Alba' A
Scabiosa caucasica (House's hybrids) A
Scabiosa Chile Black' A
Scabiosa columbaria A
Scabiosa columbaria 'Alpina' A
Scabiosa columbaria 'Nana' A
Scabiosa columbaria subsp. ochroleuca A
Scabiosa columbaria subsp. ochroleuca 'Moon Dance' A
Scabiosa crenata A
Scabiosa dallaportae A
Scabiosa fischeri A
Scabiosa graminifolia F
Scabiosa japonica A
Scabiosa japonica var. alpina A
Scabiosa japonica var. alpina 'Ritz Blue' A
Scabiosa lucida A *
Scabiosa montana A
Scabiosa ochroleuca A
Scabiosa pink Mist' A
Scabiosa sp. A
Scabiosa stellata A
Scabiosa triandra A
Scabiosa ucranica A
Scabiosa vestina A
Schisandra chinensis A 7
Schivereckia doerfleri A 2
Schivereckia podolica E
Schivereckia sp. A
Schizachyrium scoparium A
Schizachyrium scoparium 'The Blues' A
Schizanthus grahamii A 2
Schizonepeta kokanica L
Schizophragma hydrangeoides A
Schizostylis coccinea A
Schoenolirion album L
Sciadopitys verticillata G
Scilla amethystina H
Scilla autumnalis G *
Scilla bifolia H *
Scilla campanulata J *
Scilla hyacinthoides A *
Scilla lilio-hyacinthus J *
Scilla litardierei G *
Scilla mischtschenkoana ! L *
Scilla non-scripta F *
Scilla peruviana *
Scilla pratensis G *
Scilla pyrenaica ! L *
Scilla rosenii H
Scilla scilloides A
Scilla siberica ! L *
Scilla sp. ! L *
Scilla verna ! L *
Scirpus americanus J *
Scleranthus biflorus H 2
Scleranthus uniflorus A 2
Scoliopus bigelovii C
Scopolia stramonifolia F
Scorzonera radiata A
Scorzonera suberosa subsp. cariensis A
Scrophularia chrysantha ?
Scrophularia lanceolata J 7 8
Scrophularia macrantha B 3
Scrophularia marilandica L 3
Scrophularia nodosa A 3 *
Scrophularia pamirica ?
Scrophularia sp. L
Scutellaria albida A
Scutellaria alpina A
Scutellaria alpina 'Arcobaleno' A
Scutellaria alpina 'Moonbeam' B
Scutellaria altissima A
Scutellaria baicalensis A
Scutellaria balearica A
Scutellaria diffusa A
Scutellaria grandiflora A
Scutellaria hastifolia A
Scutellaria incana F
Scutellaria indica var. parvifolia B
Scutellaria laeteviolacea B
Scutellaria lateriflora A
Scutellaria laterifolia A
Scutellaria mongolica A
Scutellaria oreophila ?
Scutellaria pontica A
Scutellaria resinosa A 2
Scutellaria sp. A
Scutellaria velenovskyi A
Scutellaria zhongdianensis A
Secale cereale A
Securigera orientalis ! E *
Securinega suffruticosa A
Sedum acre A
Sedum album A
Sedum all species *
Sedum anacampseros A
Sedum caeruleum A
Sedum cauticola 'Lidakense' A
Sedum hillebrandii A
Sedum Isle of Sakhalin' A 3
Sedum kamtschaticum A
Sedum kamtschaticum var. floriferum A
Sedum kamtschaticum var. floriferum 'Weihenstephaner Gold' A 3
Sedum kamtschaticum var. kamtschaticum 'Variegatum' A
Sedum lanceolatum A
Sedum magellense K 3 *
Sedum middendorffianum A
Sedum nevii A
Sedum pachyclados A
Sedum pallidum var. bithynicum A
Sedum pilosum A 3 4
Sedum pilosum 'Superbum' A 3 4
Sedum pluricaule 'Rose Carpet' A
Sedum populifolium A
Sedum pulchellum A 3
Sedum purdyi A
Sedum pusillum A
Sedum reflexum A 3
Sedum reflexum 'Blue Spruce' A 3
Sedum Rosy Glow' L
Sedum rupestre A 3
Sedum rupestre 'Angelina' A 3
Sedum rupestre subsp. reflexum A 3
Sedum sempervivoides A
Sedum sp. A
Sedum spathulifolium F
Sedum spathulifolium 'Cape Blanco' F *
Sedum spectabile 'Pink Chablis' A 3
Sedum spurium A 3
Sedum telephium A 3
Sedum urvillei A
Sedum x 'Waight Hybrid' ?
Selinum carvifolia E
Selinum tenuifolium D 4
Selinum wallichianum D 4
Semiaquilegi sp. ! J
Semiaquilegia adoxoides ! J
Semiaquilegia ecalcarata A
Semiaquilegia ecalcarata 'Flore Pleno' A
Semiaquilegia simulatrix A 3
Sempervivum 'Appletini' ?
Sempervivum 'Autumn Apple' ?
Sempervivum 'More Honey' ?
Sempervivum 'Silverine' ?
Sempervivum all species *
Sempervivum arachnoideum A
Sempervivum arachnoideum 'Forest Frost' A
Sempervivum arachnoideum x pittonii A
Sempervivum Hayling' ?
Sempervivum heuffelii 'Sundancer' A
Sempervivum hybrid B 3
Sempervivum Jungle Shadows' ?
Sempervivum Majestic' ?
Sempervivum Purple Passion' ?
Sempervivum Silberkarneol' H
Sempervivum sp. B 3
Sempervivum tectorum B 3
Senecio abrotanifolius A
Senecio argunensis A
Senecio argunensis Turcz. A
Senecio aureus A
Senecio cannabifolius A
Senecio cordatus A
Senecio doria A *
Senecio halleri A 3
Senecio incanus A
Senecio incanus subsp. incanus A
Senecio jacquemontianus A
Senecio ligularia A 3
Senecio polyodon A
Senecio polyodon var. subglaber A
Senecio pseudoarnica A
Senecio saxosus A 3
Senecio siegfriedi ? 3
Senecio sp. A *
Senecio werneriifolius A 3
Senna covesii A 6 7
Senna hebecarpa A 6 7
Senna marilandica J 6 7
Senna multiglandulosa A 6
Senna sp. ?
Seriphidium nutans A
Seriphidium vallesiacum A
Serratula coronaria L
Serratula coronata L
Serratula coronata f. alba L
Serratula coronata subsp. insularis L
Serratula seoanei A
Serratula tenuifolia ?
Serratula tinctoria A
Sesamum trilobum A
Seseli elatum subsp. osseum A
Seseli gummiferum B
Sesleria argentea B
Sesleria autumnalis J
Sesleria caerulea F
Sesleria glauca A
Setaria italica A
Shepherdia argentea J
Shepherdia canadensis H 2
Shortia soldanelloides ! A *
Sibbaldia procumbens A 3 *
Sibbaldia tridentata A
Sibbaldiopsis tridenta A
Sibbaldiopsis tridenta 'Nuuk' A
Sibbaldiopsis tridentata J
Sibiraea altaiensis A
Sibiraea altaiensis var. croatica A
Sibiraea angustata A
Sibiraea laevigata A
Sidalcea candida L
Sidalcea malviflora A
Sidalcea malviflora 'Alba' A
Sidalcea Party Girl' A
Sideritis bicolor J
Sideritis dasygnaphala A
Sideritis hyssopifolia A
Sideritis sp. ?
Sideritis syriaca A 6
Sieversia reptans A
Silaum silaus L
Sildacea sp. A
Silene acaulis A
Silene acaulis ex. Iceland A
Silene all species A *
Silene alpestris A
Silene alpestris 'Ice Cups' A
Silene alpina A
Silene alpina 'Alba' A
Silene apetala A
Silene armena A
Silene armeria A 3
Silene armeria 'Electra' A 3
Silene asterias B
Silene atropurpurea A 3 4
Silene baccifer A
Silene baccifera A
Silene baschkirorum A
Silene borderei A
Silene caespitosa A
Silene caroliniana A
Silene caroliniana 'Red Wherry' A
Silene caroliniana ssp. wherryi A
Silene caucasica A
Silene chalcedonica A 3 4
Silene chalcedonica 'Alba' A 3 4
Silene ciliata A
Silene coeli-rosa B
Silene compacta A
Silene coronaria A 3 4
Silene coronaria 'Alba' A 3 4
Silene coronaria 'Hoarfrost' A 3 4
Silene davidii A
Silene delavayi A
Silene dinarica A
Silene dioica D
Silene douglasii A
Silene elisabethae A
Silene fimbriata A
Silene flos- cuculi A 3 4
Silene flos-jovis A
Silene foliosa A
Silene glauca K
Silene glaucifolia A
Silene grayi A
Silene hookeri A
Silene involucrata L
Silene italica A
Silene jenisseensis A
Silene keiskei A
Silene maritima A 4
Silene nutans A
Silene orientalis A
Silene parryi A
Silene pendula 'Compacta' A 2
Silene pendula 'Peach Blossom' A 2
Silene petersonii A
Silene polaris A
Silene purpurata A
Silene pusilla A
Silene regia A
Silene repens A
Silene repens var. angustifolia A
Silene Robin Whitebreast' A 4
Silene ruprechtii ?
Silene samojedorum A 2
Silene saxifraga A
Silene schafta ! A *
Silene schafta 'Splendens' A *
Silene secundiflora K
Silene sibirica A
Silene sieboldii A
Silene sp. A
Silene suecica A
Silene suecica var. oelandica A
Silene tatarica A
Silene tatjanae A
Silene undulata A
Silene uniflora A 4
Silene uniflora 'Compacta' A 4
Silene uniflora 'Ice Cups' A 4
Silene uniflora 'Rosea' A 4
Silene uralensis subsp. apetala A
Silene uralensis subsp. arctica A
Silene virginica G *
Silene viridiflora A
Silene viscaria A 3
Silene viscaria 'Alba' A 3
Silene viscaria 'Feuer' A 3 4
Silene viscaria subsp. atropurpurea A 3 4
Silene viscosa A 2
Silene vulgaris A
Silene wahlbergella A
Silene waldsteinii A
Silene wallichiana A
Silene x arkwrightii A
Silene x arkwrightii 'Vesuvius' A
Silene x haageana L
Silene x robotii A
Silene zawadskii A
Silphium asteriscus J
Silphium integrifolium A
Silphium laciniatum L
Silphium laciniatum L
Silphium perfoliatum A
Silphium terebinthinaceum J
Silphium trifoliatum J
Silybum marianum A
Silybum sp. A
Simethis planifolia A
Sinningia calcaria A
Sinningia sp. A
Sinocalycanthus chinensis A
Sinopodophyllum hexandrum E 8
Sisymbrium luteum A
Sisymbrium sp. A
Sisyrinchium albidum B
Sisyrinchium angustifolium A 3
Sisyrinchium angustifolium f. album A 3
Sisyrinchium bellum A 7 *
Sisyrinchium californicum A
Sisyrinchium douglasii B
Sisyrinchium graminoides A 3
Sisyrinchium idahoense F
Sisyrinchium idahoense var. idahoense F
Sisyrinchium macrocarpum L
Sisyrinchium montanum B
Sisyrinchium mucronatum J
Sisyrinchium Pole Star' J
Sisyrinchium sp. L
Sisyrinchium striatum B
Sisyrinchium tinctorium A
Sium sisarum A
Sium suave K
Smelowskia calycina L
Smilacina purpurea ! L
Smilacina racemosa G *
Smilax herbacea H
Smilax rotundifolia A
Smyrnium perfoliatum E *
Solanum atropurpureum A
Solanum integrifolium A
Solanum lycopersicum A
Solanum lycopersicum 'Orange Hat' A
Solanum melongena 'Turkish Orange' A
Solanum pimpinellifolium 'Yellow Current' A
Solanum sisymbriifolium A
Solanum triangulare ?
Soldanella alpina ! A
Soldanella carpatica ! A 2
Soldanella carpatica x montana ! A 2
Soldanella hungarica ! A
Soldanella minima ! G 3
Soldanella minima 'Alba' ! G 3
Soldanella montana ! A
Soldanella rhodopaea ! G 3
Soldanella sp. ! G
Soldanella villosa ! J
Solenanthus apenninus A *
Solenanthus sp. J
Solenopsis bivonae L
Solenostemon scutellarioides A
Solidago ?Dansolitlem? K
Solidago 'Little Lemon' A
Solidago alpestris A
Solidago caesia A
Solidago canadensis A 3
Solidago confinis A
Solidago cutleri A
Solidago erecta L
Solidago flexicaulis J
Solidago glomerata A
Solidago hispida A
Solidago hybrid K
Solidago jailarum A
Solidago lapponica A
Solidago leiocarpa A
Solidago multiradiata A
Solidago ohioensis J 3
Solidago ptarmicoides A
Solidago Queenie' J
Solidago riddellii J 3
Solidago rigida A
Solidago sempervirens A
Solidago simplex var. ontarioensis A
Solidago sp. ?
Solidago spathulata A
Solidago speciosa A
Solidago sphacelata 'Golden Fleece' K
Solidago spiraeifolia L
Solidago virgaurea A
Solidago virgaurea subsp. jailarum A
Solidago virgaurea subsp. virgaurea A
Sophora japonica ! A 6 7
Sorbaria angustifolia A
Sorbaria tomentosa var. angustifolia A
Sorbus alnifolia G 7
Sorbus all species *
Sorbus americana G 2
Sorbus aria 'Lutescens' G 3
Sorbus aucuparia var. edulis 'Rossica ' *
Sorbus decora ! *
Sorbus intermedia ! *
Sorbus koehneana L
Sorbus koreana ?
Sorbus latifolia ! *
Sorbus pohuashanensis E
Sorbus pseudovilmorinii L 8
Sorbus reducta J
Sorbus sambucifolia ! *
Sorbus sp. L
Sorbus torminalis *
Sorbus yuana ?
Sorghastrum avenaceum G
Sorghastrum nutans J
Sorghastrum nutrans A
Sorghum bicolor A
Sorghum decolor 3 *
Sorghum nigrum A
Sparganium hyperboreum ! A *
Spartium junceum A
Sphaeralcea coccinea F
Spigelia chiapensis ?
Spigelia marilandica J
Spilanthes acmella A 3
Spilanthes oleracea A 3
Spilanthes sp. ?
Spiraea all species K
Spiraea japonica 'Goldflame' A 3
Spiraea sp. L
Spiraea tomentosa L
Spiraea trifoliata F
Spiraea x arguta 'Bridal Wreath' ?
Spiranthes cernua *
Spodiopogon sibiricus A 3
Sporobolus heterolepis G
Sporobolus sp. A
Sprekelia formosissima A 2
Stachys abchasica A
Stachys albotomentosa K *
Stachys alopecuros A
Stachys betonica A
Stachys bicolor J
Stachys byzantina A
Stachys coccinea A
Stachys cretica A 3 4
Stachys discolor A
Stachys germanica A
Stachys grandiflora A
Stachys lavandulifolia A
Stachys macrantha A
Stachys macrantha 'Superba' A
Stachys minima J
Stachys minor J
Stachys monieri A
Stachys montana subsp. montana J
Stachys officinalis A
Stachys officinalis 'Densiflorus' A
Stachys officinalis 'Hummelo' A
Stachys officinalis 'Pink Cotton Candy' A
Stachys officinalis subsp. officinalis A
Stachys recta A
Stachys spathulata J
Stachys sylvatica A
Stapelia variegata A
Staphylea bumalda ! L
Staphylea pinnata L
Staphylea trifolia L
Staphylea trifoliata L
Stellaria chamaejasme var. chrysantha D
Stellaria graminea A
Stewartia monadelpha ! 5 *
Stewartia pseudocamellia ! 5 *
Stewartia serrata ?
Stigmatocarpum criniflorum A
Stipa arundinacea A 3
Stipa barbata H
Stipa calamagrostis A
Stipa capillata A 3
Stipa caucasica A
Stipa pulcherrima F
Stipa sp. A
Stipa tenuissima F
Stipa zalesskii F
Stokesia laevis A
Stokesia laevis 'Blue Danube' A
Stokesia laevis 'Klaus Jelitto' A
Stokesia laevis 'Peach Melba' A
Stokesia sp. B
Streptopus amplexifolius ! L 8
Streptopus roseus D 2 8
Strobilanthes atropurpureus A
Stylidium graminifolium A 3
Stylophorum diphyllum ! H *
Stylophorum lasiocarpum ! D *
Styphnolobium japonicum A 6
Styrax japonicus D
Styrax japonicus 'Carillon' D
Styrax japonicus 'Pink Chimes' D
Styrax japonicus 'Roseus' D
Styrax obassia C
Succisa inflexa A 3
Succisa pratensis A 3
Succisa pratensis 'Alba' A 3
Succisa pratensis 'Nana' A 3
Succisella inflexa A
Succisella inflexa 'Frosted Pearls' A
Swainsona formosa A 1 6 7 *
Swertia schugnanica L
Symphoricarpos albus C 8
Symphoricarpos Amethyst' C 8
Symphyandra armena A
Symphyandra hoffmannii A
Symphyandra pendula A
Symphyandra sp. A
Symphyandra wanneri A
Symphyandra zangezura A
Symphyotrichum cordifolium J
Symphyotrichum laeve A
Symphyotrichum novae-angliae B
Symphyotrichum novi-belgii J
Symphyotrichum novi-belgii 'Professor Anton Kippenberg' J
Symphyotrichum oblongifolium B
Symphyotrichum oolentangiensis A
Symphyotrichum puniceum J
Symphyotrichum shortii J
Symphyotrichum subulatum v. squamatum A 3
Symphytum officinale B
Symphytum popovii B
Symphytum tuberosum B
Symphytum x uplandicum 'Axminster Gold' A
Syneilesis aconitifolia A *
Syneilesis intermedia A *
Syneilesis palmata L
Synthyris missurica L
Synurus deltoides L
Syringa komarowii G 8
Syringa reticulata A 3
Syringa reticulata var. amurensis A 3
Syringa reticulata var. mandshurica A 3
Syringa wolfii L 7
Syringa x prestoniae G 3
Syringa yunnanensis J
Taenidia integerrima J
Tagetes 'Cottage Red' A
Tagetes 'Spanish Brocade' A
Tagetes erecta A
Tagetes erecta 'Garland Orange' A
Tagetes erecta 'Giant Orange' A
Tagetes erecta 'Orange Hawaii' A
Tagetes erecta 'Simba' A 2
Tagetes Gem Series A
Tagetes patula A
Tagetes patula 'Colossus' A
Tagetes patula 'Naughty Marietta' A
Tagetes patula 'Queen Sophia' A
Tagetes patula 'Strawberry Blonde' A 2
Tagetes patula Safari Series A
Tagetes sp. A
Tagetes tenuifolia A
Tagetes tenuifolium A
Talinum calycinum H
Talinum fruticosum A
Talinum lineare ?
Talinum paniculatum A
Talinum paniculatum 'Kingswood Gold' A
Talinum paniculatum 'Limon' A
Talinum rugospermum F
Talinum sediforme F
Talinum spinescens H
Talinum teretifolium A 3
Talinum thompsonii A
Talinum Zoe' A
Tamarix chinensis *
Tamarix pentandra *
Tamarix ramosissima 'Pink Cascade' *
Tanacetum albipannosum K
Tanacetum bipinnatum ! J 3 *
Tanacetum cinerariifolium A 2
Tanacetum coccineum 'James Kelway' A 3
Tanacetum densum subsp. amani A
Tanacetum huronense ! B *
Tanacetum huronense var. terra-novae ! B *
Tanacetum macrophyllum ! A
Tanacetum niveum ! A
Tanacetum niveum 'Jackpot' ! B
Tanacetum parthenium ! A
Tanacetum parthenium 'aureum' ! A
Tanacetum parthenium 'Flore Pleno' A
Tanacetum parthenium 'Selma Star' A
Tanacetum parthenium 'White Wonder' ! A
Tanacetum vulgare A
Taraxacum albidum K
Taraxacum carneocoloratum A
Taraxacum faeroense A
Taraxacum magellanicum A
Taraxacum montanum ? 3
Taraxacum pamiricum A
Taraxacum pseudoroseum A
Taraxacum pumilum A
Taxus baccata C 3 4
Taxus brevifolia C
Tecoma sambucifolia A
Tecoma stans A *
Tecoma stans var. sambucifolia A
Telekia sp. A
Telekia speciosa A
Telephium imperati ! A
Telesonix jamesii L 3 *
Tellima grandiflora A 3
Telopea speciosissima A
Telopea truncata A 6
Tephroseris flammea D 2
Tephrosia virginiana A 6 7
Tetraneuris acaulis A
Tetraneuris grandiflora A
Tetraneuris herbacea A
Tetraneuris torreyana A
Teucrium asiaticum K *
Teucrium botrys A
Teucrium canadense B
Teucrium chamaedrys F
Teucrium flavum subsp. glaucum B
Teucrium halacsyanum A
Teucrium hircanicum A
Teucrium montanum F
Teucrium rotundifolium A
Teucrium scorodonia A
Teucrium scorodonia 'Crispum' A
Teucrium subspinosum G
Teucrium webbianum A
Teucrium x lucidrys A
Thalictrum 'Splendide' ! ?
Thalictrum 'Tntnp' ! ?
Thalictrum 'Tntnw' ! ?
Thalictrum acteifolium K
Thalictrum alpinum ! A
Thalictrum aquilegiifolium ! A
Thalictrum aquilegiifolium 'Album' ! A
Thalictrum aquilegiifolium 'Nimbus White' ! L 4
Thalictrum aquilegiifolium 'Purpureum' ! A
Thalictrum aquilegiifolium 'Sparkler' ! A
Thalictrum aquilegiifolium var. intermedium ! A
Thalictrum baicalense ! L
Thalictrum Black Stockings' ! K
Thalictrum chelidonii ! B
Thalictrum dasycarpum ! H
Thalictrum delavayi ! A
Thalictrum delavayi 'Splendide' ! ? 5
Thalictrum diffusiflorum ! L *
Thalictrum dioicum ! K 5
Thalictrum dipterocarpum ! B
Thalictrum filamentosum ! A
Thalictrum flavum ! B
Thalictrum flavum subsp. glaucum ! B
Thalictrum foetidum ! K
Thalictrum glaucum ! A
Thalictrum isopyroides ! A
Thalictrum lucidum ! D
Thalictrum minus ! B
Thalictrum minus 'Adiantifolium' ! B
Thalictrum minus ssp. pubescens ! B
Thalictrum minus var. hypoleucum ! B
Thalictrum most species ! A 5 *
Thalictrum polygamum ! L *
Thalictrum pubescens ! A
Thalictrum Purplelicious' ! K
Thalictrum revolutum ! J
Thalictrum rochebruneanum ! L 4
Thalictrum rochebruneanum 'Lavender Mist' ! L 4
Thalictrum rochebrunianum v. grandisepalum A
Thalictrum simplex subsp. galioides ! A 3
Thalictrum sp. ! B 5
Thalictrum speciosissimum ! F
Thalictrum sphaerostachyum ! A 3
Thalictrum tuberosum ! B
Thalictrum uchiyamae ! G
Thelesperma burridgeanum 'Phillipine' K
Thermopsis caroliniana ! A 1 6 7 *
Thermopsis lanceolata ! A 1 6 7 *
Thermopsis lupinoides A 1 6 7 *
Thermopsis mollis A 1 6 7 *
Thermopsis montana A 1 6 7 *
Thermopsis rhombifolia A
Thermopsis smithiana ! A 1 6 7 *
Thermopsis villosa ! A 1 6 7 *
Thlaspi all species A
Thlaspi alpestre A
Thlaspi alpinum A
Thlaspi arvense A
Thlaspi bellidifolium A
Thlaspi bulbosum A
Thlaspi caerulescens A
Thlaspi crissum A
Thlaspi montanum A
Thlaspi praecox F
Thlaspi rotundifolium A
Thlaspi sp. A
Thlaspi stylosum A
Thlaspi zaffranii A
Thuja koraiensis J
Thuja occidentalis 'Nigra' A 2
Thymophylla tenuiloba K
Thymus all species *
Thymus comosus A
Thymus leucotrichus subsp. neiceffii A
Thymus neiceffii A
Thymus serpyllum A
Thymus serpyllum var. albus A
Thymus tiflisiensis A 3
Thysanotus multiflorus A *
Tiarella Black Snowflake' ! A
Tiarella cordifolia ! A 3 *
Tiarella cordifolia 'Dunvegan' ! A 3 *
Tiarella cordifolia 'Iron Cross' ! A
Tiarella Cygnet' ! A
Tiarella hybrid ! E
Tiarella Iron Butterfly' ! A
Tiarella mix ! E
Tiarella polyphylla ! E
Tiarella sp. ! E
Tiarella Spanish Cross' ! A
Tiarella Spring Symphony' ! A
Tiarella trifoliata var. trifoliata ! K
Tiarella unifoliata ! K
Tiarella wherryi ! A 3
Tibouchina sp. ? 3
Tigridia pavonia K
Tigridia sp. A
Tinantia erecta A 6
Titanopsis calcarea A
Tithonia rotundifolia A 3
Tithonia rotundifolia 'Torch' A 3
Tithonia sp. A
Tofieldia glutinosa B
Tolmiea menziesii B
Tonestus lyallii A
Toona sinensis A 7
Townsendia alpigena A 3
Townsendia condensata A
Townsendia eximia A
Townsendia eximia x grandiflora A
Townsendia exscapa A
Townsendia formosa A
Townsendia grandiflora A
Townsendia hookeri A *
Townsendia incana A
Townsendia minima A
Townsendia montana A 3
Townsendia parryi A
Townsendia rothrockii A
Townsendia sp. A
Trachelium caeruleum A 3
Trachelium jacquinii G
Tradescantia bracteata L
Tradescantia sp. J
Tragopogon crocifolius A
Tragopogon dubius A
Tragopogon sp. A
Tragopogon turkestanicus ! A
Trautvetteria caroliniensis A
Trautvetteria caroliniensis var occidentalis ! A
Trautvetteria palmata ?
Triantha glutinosa G 3
Tricyrtis bakeri A 3
Tricyrtis formosana ! J 3
Tricyrtis formosana 'Autumn Glow' ! J 3
Tricyrtis formosana 'Dark Beauty' ! J 3
Tricyrtis hirta A 3
Tricyrtis hirta 'White Towers' A 3
Tricyrtis hirta 'Alba' A 3
Tricyrtis latifolia A 3
Tricyrtis macranthopsis A
Tricyrtis macropoda D
Tricyrtis puberula A 3
Tricyrtis sp. ! L 3
Tricyrtis White Towers' A 3
Trientalis borealis A
Trifolium incarnatum A
Trifolium repens A 2 6
Trifolium rubens F
Trifolium rubens 'Red Feather' F
Trifolium sp. ?
Trifolium trichocephalum G
Triglochin maritima *
Trillium albidum ! D 2 *
Trillium all species ! L *
Trillium cernuum ! *
Trillium cuneatum ! *
Trillium erectum ! L 4 *
Trillium erectum var. album ! L 4 *
Trillium erectum var. blandum ! L 4 *
Trillium erectum var. declinatum ! L 4 *
Trillium flexipes ! L 4 *
Trillium grandiflorum ! L 4 *
Trillium kurabayashii ! L 4 *
Trillium luteum ! 4 *
Trillium nivale ! L 4 *
Trillium recurvatum ! L *
Trillium rivale H *
Trillium simile ! L *
Trillium undulatum ! L 2 4 *
Trillium vaseyi ! L *
Triosteum aurantiacum L *
Triosteum himalayanum H
Triosteum pinnatifidum H *
Tripetaleia bracteata A
Tripetaleia paniculata A 3
Tripleurospermum caucasicum K
Tripolium pannonicum subsp. tripolium A 3
Tripora divaricata L
Tripterygium regelii A
Tripterygium wilfordii A
Triteleia bridgesii B
Triteleia grandiflora K
Triteleia hyacinthina L
Triteleia ixioides ! A
Triteleia laxa A
Triteleia laxa Koningin B
Triticum spelta A
Tritonia disticha ssp. rubrolucens A
Tritonia sp. ! A
Trollius acaulis G
Trollius altaicus ! E
Trollius altissimus G
Trollius chinensis ! L
Trollius chinensis 'Golden Queen' ! L
Trollius dschungaricus G
Trollius europaeus E
Trollius europaeus 'Golden Globe' E
Trollius europaeus 'Superbus' E
Trollius hondoensis G
Trollius hybrid G
Trollius ircuticus L
Trollius laxus ! L
Trollius laxus 'Albiflorus' ! L
Trollius laxus var. albiflorus ! L
Trollius ledebourii ! L
Trollius pumilus A
Trollius sp. G
Trollius x cultorum H
Trollius x cultorum 'Cheddar' H
Trollius x cultorum 'Golden Queen' ! L
Trollius x cultorum 'Lemon Queen' ! L
Trollius x cultorum 'New Moon' H
Trollius x cultorum 'Orange Queen' ! L
Tropaeolum incisum A
Tropaeolum majus A
Tropaeolum peregrinum A
Tropaeolum sp. A
Tropaeolum speciosum A
Tuberaria guttata A
Tulbaghia fragrans A
Tulbaghia fragrans 'Alba' A
Tulbaghia natalensis A
Tulbaghia simmleri A
Tulbaghia sp. A
Tulbaghia violacea A
Tulipa Addis' L *
Tulipa all species L *
Tulipa Ancilla' L *
Tulipa Batalinii Group L *
Tulipa biebersteiniana L *
Tulipa biflora L *
Tulipa clusiana L *
Tulipa clusiana 'Cynthia ' C *
Tulipa clusiana 'Lady Jane' C *
Tulipa clusiana var. chrysantha C *
Tulipa dasystemon L *
Tulipa Fashion' L *
Tulipa Giuseppe Verdi' L *
Tulipa greigii L *
Tulipa Heart's Delight' L *
Tulipa humilis var. pulchella L *
Tulipa kaufmanniana D *
Tulipa kolpakowskiana L *
Tulipa Little Beauty' L *
Tulipa neustruevae L *
Tulipa Plaisir' L *
Tulipa polychroma L *
Tulipa pulchella L *
Tulipa saxatilis L *
Tulipa saxatilis Bakeri Group L *
Tulipa sp. L *
Tulipa sprengeri L *
Tulipa Sweet Lady' L *
Tulipa sylvestris L *
Tulipa tarda L *
Tulipa turkestanica C *
Tulipa urumiensis L *
Tunica saxifraga A
Turritis brassica ?
Turritis glabra A
Tweedia coerulea A
Typha minima A *
Umbilicus platyphyllus A
Umbilicus rupestris A
Unknown sp. ? 3
Utricularia cornuta ?
Uvularia grandiflora ! L *
Uvularia perfoliata x grandiflora ! L *
Vaccinium macrocarpon E
Vaccinium membranaceum A
Vaccinium sp. G
Vaccinium uliginosum subsp. microphyllum G 3 4
Vaccinium vitis-idaea A 3
Valeriana gibbosa ?
Valeriana montana J
Valeriana officinalis G 3
Valeriana pyrenaica A
Valeriana rubra A
Vella spinosa A
Veltheimia bracteata A 2
Veltheimia sp. A 2
Venidium fastuosum A
Venidium sp. A
Venidium Zulu Prince' A
Veratrum album 7 *
Veratrum album subsp. album 7 *
Veratrum nigrum A 7 *
Veratrum species 7 *
Veratrum viride ! 7 *
Verbascum Arctic Summer' A
Verbascum atroviolaceum A
Verbascum bakerianum A
Verbascum barnadesii J
Verbascum blattaria A 3
Verbascum blattaria f. albiflorum A 3
Verbascum blattaria var. albiflora A 3
Verbascum bombyciferum A
Verbascum bombyciferum 'Polarsommer' A
Verbascum bugulifolium A
Verbascum chaixii A 3
Verbascum chaixii 'Wedding Candles' A 3
Verbascum chaixii 'Album' A 3
Verbascum chaixii 'Sixteen Candles' A 3
Verbascum Cotswold Cream' A
Verbascum Cotswold Gem' A 3
Verbascum Cotswold Group A 3
Verbascum creticum A 3
Verbascum densiflorum A
Verbascum dumulosum A
Verbascum hybrid A
Verbascum lychnitis A 3
Verbascum lydium A
Verbascum nigrum A 3
Verbascum nigrum var. album A 3
Verbascum olympicum A
Verbascum olympicum A
Verbascum phoeniceum A
Verbascum Primrose Cottage' A
Verbascum pulverulentum A
Verbascum pyramidatum A 3
Verbascum Raspberry Ripple' A 3
Verbascum sp. A 3
Verbascum thapsus A
Verbascum wiedemannianum A
Verbascum x hybridum 'Banana Custard' A
Verbascum x hybridum 'Snow Maiden' A 3
Verbascum x splendidum A 3
Verbena bonariensis A
Verbena hastata J 3
Verbena hastata 'Alba' J 3
Verbena officinalis L
Verbena rigida J
Verbena stricta J
Verbesina alternifolia J
Verbesina encelioides A 3
Verbesina helianthoides J
Vernonia acaulis G
Vernonia altissima A 3 4 *
Vernonia arkansana G
Vernonia arkansana 'Mammuth' G
Vernonia baldwinii G
Vernonia crinita G
Vernonia fasciculata G
Vernonia gigantea G
Vernonia gigantea 'Jonesboro Giant' G
Vernonia lettermanii 'Iron Butterfly' L
Vernonia lindheimeri G *
Vernonia noveboracensis G 2
Vernonia noveboracensis f. alba G 2
Vernonia sp. A
Veronica 'Sunny Border Blue' A 3
Veronica allionii A
Veronica alpina J
Veronica aphylla D
Veronica armena A 3
Veronica austriaca A 3
Veronica austriaca subsp. teucrium A 3
Veronica austriaca subsp. teucrium 'Royal Blue' A 3
Veronica bellidioides A
Veronica flexuosa ?
Veronica fruticans G 2
Veronica fruticosa A 3
Veronica fruticulosa A
Veronica gentianoides A 3
Veronica grandiflora A 3
Veronica hybrid A
Veronica incana A
Veronica kellereri A
Veronica longifolia A 3
Veronica longifolia 'First Glory' A 3
Veronica missurica ssp. stellata L
Veronica nipponica A
Veronica officinalis B 3
Veronica peduncularis L
Veronica prostrata B 3
Veronica prostrata 'Verbrig' B 3
Veronica sachalinensis A
Veronica saturejoides B 3
Veronica schmidtiana B 3
Veronica schmidtiana 'Nana' B 3
Veronica sibirica A
Veronica sp. L
Veronica spicata A
Veronica spicata 'Giles Van Hees' A
Veronica spicata 'Nana Blauteppich' A
Veronica spicata 'Red Fox' A
Veronica spicata 'Sightseeing' A
Veronica spicata subsp. incana A
Veronica spicata subsp. incana 'Nana' A
Veronica subsessilis A
Veronica tauricola A
Veronica Very Van Gogh' A 3
Veronicastrum album B
Veronicastrum satureioides A
Veronicastrum sibiricum K 3
Veronicastrum sp. J 3
Veronicastrum virginicum J 3 6
Veronicastrum virginicum 'Album' J 3 6
Veronicastrum virginicum 'Lavendelturm' J 3 6
Veronicastrum virginicum var. incarnatum J 3 6
Vestia foetida A
Viburnum alnifolium L
Viburnum carlesii G 8
Viburnum carlesii 'Compactum' G 8
Viburnum cassinoides D 8
Viburnum cassinoides 'Brandywine' D 8
Viburnum dentatum 'Blue Muffin' L 8
Viburnum farreri L 8
Viburnum fragrans L 8
Viburnum lantanoides D 8
Viburnum lentago L 8
Viburnum nudum var. cassinoides D 8
Viburnum opulus var. americana D 8 *
Viburnum plicatum f. tomentosum C
Viburnum plicatum f. tomentosum 'Molly Schroeder' D 8
Viburnum sargentii D
Viburnum sp. L 8
Viburnum trilobum C
Viburnum veitchii L 8
Viburnum x carlcephalum L 8
Vicia cassia A 7
Vicia cracca A 7
Vicia faba A 7
Vicia sepium A 7
Vicia sp. A 7
Vicia sylvatica A 7
Vicia sylvestris A
Vincetoxicum nigrum A 4
Viola adunca ! G
Viola aetolica ! F
Viola altaica ! A
Viola Antique Lace' ! ?
Viola bertolonii ! G
Viola betonicifolia ! A 2
Viola biflora ! K
Viola calcarata ! A
Viola canadensis ! L
Viola chaerophylloides ! L
Viola cornuta ! A 3
Viola cornuta 'Alba Minor' ! A 2
Viola cornuta 'Baby Franjo' ! A 2
Viola cornuta hybrid ! A 3
Viola corsica ! A
Viola crassa ! J
Viola dacica ! A
Viola Dancing Geisha' ! ? *
Viola dubyana ! J
Viola elatior ! B
Viola fimbriatula ! D 3 4
Viola hondoensis ! J
Viola hybrid ! A 3
Viola jooi ! G
Viola kelleri ! J
Viola labradorica ! C 3
Viola lanceolata ! F
Viola lancifolia ! L
Viola mandshurica ! F
Viola montana ! ?
Viola most species ! *
Viola nephrophylla ! L
Viola Nigra' ! A 2
Viola odorata ! A 4
Viola odorata 'Sulphurea' ! A 4
Viola palmata ! D *
Viola pedata ! E
Viola pedatifida ! D
Viola pensylvanica ! A
Viola pinnata ! L
Viola pubescens ! G
Viola pyrenaica ! J
Viola Rodney Davey' ! F
Viola somchetica ! J
Viola sororia ! J *
Viola sororia 'Freckles' ! D *
Viola sp. ! J
Viola subsinuata A 2
Viola tricolor 'Bowles' Black' ! A 3 *
Viola tricolor subsp. curtisii ! A 3
Viola verecunda var. yakusimana ! J
Viola x wittrockiana A
Viscaria vulgaris A 3
Visnaga adunca A
Visnaga daucoides 'Green Mist' A
Vitaliana primuliflora E
Vitex agnus-castus A 3 7
Wahlenbergia albomarginata B
Wahlenbergia congesta A 3
Wahlenbergia saxicola A 3
Weigela Bristol Ruby' L
Weigela middendorfiana A
Weigela praecox L
Wisteria Boskoop' A 6 7
Wisteria frutescens v. macrostachya A 6 7
Wisteria frutescens v. macrostachya 'Aunt Dee' A 6 7
Wisteria frutescens 'Aunt Dee' ! A 7
Wisteria frutescens 'Blue Moon' A 6 7
Wisteria frutescens subsp. macrostachya 'Aunt Dee'' A 6 7
Wisteria frutescens subsp. macrostachya 'Blue Moon' A 6 7
Wisteria frutescens var. macrostachya 'Blue Moon' A 6 7
Wisteria grandiflora A 6 7
Wisteria macrostachya 'Aunt Dee' A 6 7
Wisteria macrostachya 'Blue Moon' A 6 7
Wisteria sinensis A 6 7
Wisteria sinensis 'Aunt Dee' A 6 7
Wisteria sinensis 'Prolific' A 6 7
Wulfenia baldaccii A
Wulfenia blechicii J
Wulfenia blechicii subsp. rohlenae J
Wulfenia carinthiaca A 3
Wulfenia sp. L
Wulfenia x suendermannii A 3
Xanthisma coloradoense A
Xanthoceras sorbifolium A 2
Xanthorhiza simplicissima ! J
Xerochrysum bracteatum A
Xerophyllum tenax E
xPardancanda norrisii 'Sangria' A
xPardancanda sp. A 3
Xylanthemum tianschanicum A
Yucca brevifolia A *
Yucca filamentosa A
Yucca filamentosa 'Ivory Tower' A
Yucca filamentosa 'Variegata' A
Yucca flaccida 'Golden Sword' A 7
Yucca flaccida 'Wilder's Wonderful' A 7
Yucca glauca A
Yucca sp. A
Zantedeschia aethiopica A 2 8 *
Zantedeschia aethiopica 'Green Goddess' A 2 8 *
Zantedeschia elliottiana A 4
Zantedeschia sp. A 2 8 *
Zauschneria californica A
Zauschneria californica subsp. garrettii A
Zauschneria californica subsp. latifolia A
Zauschneria garrettii A 3
Zea mays A
Zea mays var. japonica A
Zelkova serrata 'Green Mansions' J 7 *
Zephyranthes atamasco ! A
Zephyranthes candida ! A
Zephyranthes chlorosolen ! A
Zephyranthes citrina ! A
Zephyranthes drummondii ! A
Zephyranthes grandiflora ! A
Zephyranthes hybrid ! A
Zephyranthes La Bufa Rosa Group ! A
Zephyranthes macrosiphon ! A
Zephyranthes minuta A
Zephyranthes rosea ! A
Zephyranthes sp. ! A
Zephyranthes sulphurea ! A
Zigadenus elegans J
Zigadenus fremontii L
Zigadenus sp. ?
Zinnia 'Berry Tart' A
Zinnia 'Peppermint Stick' A
Zinnia elegans 'California Giants' A
Zinnia grandiflora F
Zinnia hybrid A
Zinnia Paintbrush' A
Zinnia peruviana A
Zinnia peruviana 'Red Spider' A
Zinnia sp. A
Zizia aptera A 3
Zizia aurea J
Ziziphora clinopodioides A
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