| Haageocereus - Hemizonia
Haageocereus acranthus (2)
Haageocereus australis var. acinacispinus (1)
Haageocereus versicolor var. aureispinus (2)
Habenaria (2)
Habenaria nivea (1)
Habenaria orbiculata (1)
Habenaria rhodocheila (2)
Habenaria saccata (1)
Habranthus andersonii (3)
Habranthus tubispathus (2)
Hackelia amethystina (1)
Hackelia bella (14)
Hackelia brevicula (6)
Hackelia californica (16)
Hackelia cusickii (6)
Hackelia diffusa var. arida (3)
Hackelia floribunda (22)
Hackelia micrantha (64)
Hackelia mundula (23)
Hackelia nervosa (28)
Hackelia patens (4)
Hackelia setosa (1)
Hackelia sharsmithii (2)
Hackelia sp. (6)
Hackelia velutina (39)
Hackelia venusta (2)
Hacquetia epipactis (6)
Haemanthus albiflos (3)
Haemanthus coccineus (9)
Hainardia cylindrica (12)
Hakea bucculenta (1)
Halenia deflexa (7)
Halenia recurva (8)
Halenia umbellata (2)
Halesia carolina (4)
Halesia diptera (1)
Halesia tetraptera (4)
Halichrysis concrescens (6)
Halimeda borneensis (30)
Halimeda borneensis cf (6)
Halimeda discoidea (8)
Halimeda discoidea complex (3)
Halimeda distorta f. hederacea (4)
Halimeda heteromorpha (6)
Halimeda minima (23)
Halimeda opuntia (5)
Halimeda taenicola (6)
Halimium atriplicifolium (1)
Halimium ocymoides (1)
Halimium viscosum (3)
Halimodendron halodendron (6)
Halimolobos jaegeri (16)
Halimolobos whitedii (3)
Halleria lucida (1)
Halogeton glomeratus (29)
Halophila decipiens (23)
Halophila sp. (6)
Haloplegma duperreyi (9)
Halosaccion glandiforme (5)
Halymenia actinophysa (7)
Halymenia santamariae (1)
Hamamelis mollis (1)
Hamamelis virginiana (11)
Hamelia patens var. patens (1)
Hammarbya paludosa (2)
Handroanthus chrysotrichus (14)
Haplopappus macrocephalus (5)
Haplopappus stenophyllus (1)
Haplophyllum patavinum (1)
Haplopteris elongata (7)
Harfordia macroptera (4)
Harmonia doris-nilesiae (6)
Harmonia guggolziorum (9)
Harmonia hallii (14)
Harmonia nutans (11)
Harmonia stebbinsii (11)
Harpagonella palmeri (20)
Harpanthus flotovianus (3)
Harrimanella hypnoides (2)
Harrisia pomanensis (4)
Hastingsia alba (33)
Hastingsia bracteosa var. atropurpurea (5)
Hastingsia bracteosa var. bracteosa (5)
Hastingsia serpenticola (5)
Hastingsia serpentinicola (8)
Hatiora salicornioides (5)
Haworthia arachnoidea (1)
Haworthia attenuata (2)
Haworthia badia (1)
Haworthia bolusii var. blackbeardiana (2)
Haworthia coarctata (1)
Haworthia cooperi (1)
Haworthia cymbiformis var. cymbiformis (1)
Haworthia cymbiformis var. setulifera (1)
Haworthia emelyae (2)
Haworthia greenii (1)
Haworthia maughanii (3)
Haworthia radula (2)
Haworthia reinwardtii (1)
Haworthia sp. (2)
Haworthia springbokvlakensis (2)
Haworthia truncata (1)
Haworthia turgida var. longibracteata (1)
Hazardia brickellioides (6)
Hazardia cana (6)
Hazardia detonsa (12)
Hazardia orcuttii (16)
Hazardia squarrosa (26)
Hazardia squarrosa var. grindelioides (3)
Hazardia squarrosa var. obtusa (5)
Hazardia squarrosa var. squarrosa (5)
Hazardia whitneyi var. discoidea (1)
Hazardia whitneyi var. whitneyi (10)
Heachera merriamii (10)
Hebe epacridea (1)
Hebe macrocarpa var. brevifolia (1)
Hebe sp. (4)
Hebe speciosa (1)
Hebe x franciscana (1)
Hebe xfranciscana (1)
Hebenstretia dentata (2)
Hecastocleis shockleyi (18)
Hechtia marnier-lepostollei (1)
Hechtia texensis (1)
Hedeoma drummondii (11)
Hedeoma nana ssp. californica (14)
Hedeoma nanum (3)
Hedeoma nanum ssp. californicum (4)
Hedeoma nanum var. californicum (5)
Hedeoma todsenii (1)
Hedera canariensis (6)
Hedera helix (23)
Hedera sp. (14)
Hedwigia ciliata (3)
Hedwigia detonsa (8)
Hedwigia stellata (4)
Hedychium coronarium (1)
Hedychium flavescens (2)
Hedychium garderianum (2)
Hedychium gardnerianum (3)
Hedyotis procumbens (1)
Hedypnois cretica (35)
Hedypnois rhagadioloides (7)
Hedysarum alpinum (1)
Hedysarum boreale (15)
Hedysarum boreale var. boreale (7)
Hedysarum coronarium (10)
Hedysarum hedysaroides (1)
Hedysarum hedysaroides ssp. exaltatum (8)
Hedysarum mackensii (1)
Hedysarum occidentale (1)
Hedysarum sp. (1)
Hedysarum sulphurescens (3)
Helenium amarum (2)
Helenium autumnale (18)
Helenium autumnale var. grandiflorum (1)
Helenium autumnale var. montanum (1)
Helenium bigelovii (93)
Helenium bolanderi (2)
Helenium microcephalum var. oöclinium (4)
Helenium pinnatifidum (2)
Helenium puberulum (42)
Helenium sp. (1)
Heliamphora folliculata (3)
Heliamphora heterodoxa (1)
Heliamphora minor (3)
Heliamphora nutans (5)
Heliamphora sp. (2)
Heliamphora tatei (3)
Helianthella californica (24)
Helianthella californica var. californica (8)
Helianthella californica var. nevadensis (26)
Helianthella californica var. shastensis (2)
Helianthella castanea (16)
Helianthella quinquenervis (1)
Helianthella uniflora (5)
Helianthella uniflora var. uniflora (3)
Helianthemum apenninum (2)
Helianthemum grandiflorum (4)
Helianthemum greenei (3)
Helianthemum nummularium (5)
Helianthemum nummularium ssp. grandiflorum (1)
Helianthemum oelandicum ssp. alpestre (3)
Helianthemum salicifolium (6)
Helianthemum scoparium (43)
Helianthemum suffrutescens (16)
Helianthus angustifolius (4)
Helianthus annuus (80)
Helianthus anomala (2)
Helianthus anuus (2)
Helianthus bolanderi (44)
Helianthus californicus (24)
Helianthus ciliaris (10)
Helianthus cusickii (4)
Helianthus decapetalus (9)
Helianthus deserticola (2)
Helianthus divaricatus (4)
Helianthus exilis (11)
Helianthus giganteus (2)
Helianthus gracilentus (30)
Helianthus heterophylla (3)
Helianthus inexpectatus (9)
Helianthus maximilianii (1)
Helianthus niveus (1)
Helianthus niveus ssp. canescens (4)
Helianthus niveus ssp. tephrodes (19)
Helianthus nuttallii (1)
Helianthus nuttallii ssp. nuttallii (12)
Helianthus paradoxus (3)
Helianthus petiolaris (4)
Helianthus radula (2)
Helianthus sp. (9)
Helianthus tuberosus (23)
Helianthus uniflora (2)
Helichrysum bracteatum (13)
Helichrysum italicum (7)
Helichrysum petiolare (2)
Helichrysum retortoides (3)
Helichrysum rutidolepis (3)
Helichrysum sp. (4)
Helichrysum splendidum (2)
Helichrysum subulifolium (2)
Helichrysum tianschanicum (2)
Helicodiceros muscivorus (7)
Heliconia "dwarf jamaican" (1)
Heliconia bihai var. jacquinii (1)
Heliconia caribaea (4)
Heliconia collinsiana (1)
Heliconia densiflora (2)
Heliconia latispatha (1)
Heliconia spathocircinata (2)
Heliconia vellerigera (1)
Heliomeris longifolia var. annua (5)
Heliomeris multiflora (3)
Heliomeris multiflora var. multiflora (3)
Heliomeris multiflora var. nevadensis (20)
Heliopsis helianthoides (21)
Heliotropium amplexicaule (9)
Heliotropium angiospermum (2)
Heliotropium arborescens (1)
Heliotropium convolvulaceum (5)
Heliotropium convolvulaceum var. californicum (4)
Heliotropium curassavicum (64)
Heliotropium curassavicum var. oculatum (11)
Heliotropium europaeum (10)
Heliotropium foertherianum (2)
Heliotropium peruvianum (3)
Heliotropium polyphyllum (2)
Heliotropium sp. (1)
Heliotropium steudneri (1)
Heliotropum curassavisum (1)
Helipterum roseum (2)
Helleborus argutifolius (1)
Helleborus dumetorum (6)
Helleborus foetidus (5)
Helleborus niger (33)
Helleborus odorus (4)
Helleborus orientalis (6)
Helminthotheca echioides (21)
Helodium blandowi (1)
Helodium blandowii (9)
Heloniopsis acutifolia (6)
Hemerocallis fulva (6)
Hemerocallis lilioasphodelus (5)
Hemerocallis middendorfii (32)
Hemerocallis sp. (39)
Hemigraphis alternata (1)
Hemigraphis reptans (1)
Hemipteris werneri (1)
Hemitomes congestum (12)
Hemizonella minima (21)
Hemizonia arida (10)
Hemizonia clementina (2)
Hemizonia congesta (2)
Hemizonia congesta ssp. clevelandii (9)
Hemizonia congesta ssp. congesta (7)
Hemizonia congesta ssp. leucocephala (1)
Hemizonia congesta ssp. lutescens (16)
Hemizonia congesta ssp. luzulifolia (26)
Hemizonia congesta ssp. tracyi (2)
Hemizonia congtesta (1)
Hemizonia conjugens (4)
Hemizonia corymbosa (16)
|
Hemizonia - Homalothecium
Hemizonia corymbosa ssp. corymbosa (2)
Hemizonia corymbosa ssp. macrocephala (1)
Hemizonia fasciculata (15)
Hemizonia fitchii (39)
Hemizonia floribunda (2)
Hemizonia halliana (1)
Hemizonia increscens ssp. villosa (9)
Hemizonia kelloggii (1)
Hemizonia lobbii (6)
Hemizonia luzulafolia (5)
Hemizonia minthornii (4)
Hemizonia mohavensis (14)
Hemizonia pallida (2)
Hemizonia paniculata (11)
Hemizonia parryi ssp. australis (4)
Hemizonia parryi ssp. congdonii (4)
Hemizonia parryi ssp. parryi (9)
Hemizonia parryi ssp. rudis (2)
Hemizonia pentactis (7)
Hemizonia pungens (4)
Hemizonia pungens ssp. laevis (2)
Hemizonia pungens ssp. maritima (2)
Hemizonia pungens ssp. pungens (8)
Hemizonia streetsii (2)
Hennediella stanfordensis (4)
Henrya insularis (10)
Hepatica acutiloba (5)
Hepatica americana (1)
Hepatica nobilis (18)
Hepatica nobilis var. acuta (17)
Hepatica nobilis var. obtusa (2)
Heptapleurum arboricola (1)
Heracleum austriacum ssp. siifolium (3)
Heracleum lanatum (9)
Heracleum mantegazzianum (3)
Heracleum maximum (94)
Heracleum sphondylium (11)
Herbertus aduncus (7)
Herissantia crispa (4)
Herminium monorchis (8)
Hermodactylus tuberosus (7)
Hernandia moerenhoutiana campanulata (3)
Hernandia nymphaeifolia (5)
Hernandia ovigera (1)
Herniaria glabra (6)
Herniaria hirsuta (5)
Herniaria hirsuta ssp. cinerea (10)
Herniaria hirsuta var. hirsuta (2)
Herposiphonia tenella (1)
Herrania balaensis (1)
Herrickia glauca (15)
Herrisantia crispa (3)
Hesperalbizia occidentalis (2)
Hesperaloe funifera (1)
Hesperaloe parviflora (2)
Hesperevax acaulis (4)
Hesperevax acaulis var. acaulis (5)
Hesperevax acaulis var. ambusticola (6)
Hesperevax acaulis var. robustior (1)
Hesperevax caulescens (17)
Hesperevax sparsiflora var. brevifolia (10)
Hesperevax sparsiflora var. sparsiflora (15)
Hesperis matrionalis (3)
Hesperis matronalis (18)
Hesperocallis undulata (115)
Hesperochiron californicus (31)
Hesperochiron pumilis (2)
Hesperochiron pumilus (45)
Hesperochiron sp. (1)
Hesperocnide tenella (20)
Hesperocyparis abramsiana (6)
Hesperocyparis abramsiana var. abramsiana (7)
Hesperocyparis bakeri (1)
Hesperocyparis forbesii (6)
Hesperocyparis macnabiana (1)
Hesperocyparis pygmaea (4)
Hesperocyparis sargentii (7)
Hesperolinon adenophyllum (5)
Hesperolinon bicarpellatum (2)
Hesperolinon breweri (6)
Hesperolinon californicum (11)
Hesperolinon clevelandii (6)
Hesperolinon congestum (31)
Hesperolinon congrestum (1)
Hesperolinon disjunctum (9)
Hesperolinon drymarioides (6)
Hesperolinon micranthum (11)
Hesperolinon serpentinum (8)
Hesperolinon sharsmithiae (1)
Hesperolinon spergulinum (1)
Hesperolinon tehamense (3)
Hesperostipa comata (16)
Hesperostipa comata ssp. comata (5)
Hesperostipa neomexicana (2)
Hesperoyucca brevifolia (1)
Hesperoyucca whipplei (45)
Heteranthemis viscidehirta (3)
Heteranthemis viscidihirta (4)
Heteranthera dubia (4)
Heteranthera limosa (3)
Heterocodon rariflorum (24)
Heterodraba unilateralis (3)
Heteromeles arbutifolia (101)
Heteromoles arbutifolia (1)
Heteropappus crenatifolius (3)
Heteropappus hispidus (3)
Heteropappus meyendorfii (2)
Heteropixis natalensis (2)
Heteropogon contortus (15)
Heterosiphonia crispella (15)
Heterosiphonia crispella f. laxa (10)
Heterothalamus alienus (1)
Heterotheca fulcrata (4)
Heterotheca grandiflora (92)
Heterotheca jonesii (9)
Heterotheca monarchensis (5)
Heterotheca mucronata (3)
Heterotheca oregana var. rudis (2)
Heterotheca oregona (7)
Heterotheca oregona var. compacta (2)
Heterotheca oregona var. oregona (2)
Heterotheca oregona var. rudis (1)
Heterotheca sessiflora ssp. bolanderi (5)
Heterotheca sessiflora ssp. echioides (3)
Heterotheca sessiliflora (11)
Heterotheca sessiliflora ssp. bolanderi (17)
Heterotheca sessiliflora ssp. echioides (15)
Heterotheca sessiliflora ssp. fastigiata (3)
Heterotheca sessiliflora ssp. sessiliflora (8)
Heterotheca sessiliflora ssp. sessiliflora & Nemacaulis denudata var. denudata (1)
Heterotheca villosa (10)
Heterotheca villosa var. nana (2)
Heterotheca villosa var. pedunculata (3)
Heterotheca villosa var. villosa (4)
Heterotheca viscida (1)
Heuchera abramsii (1)
Heuchera amoena (1)
Heuchera bracteata (2)
Heuchera cylindrica (2)
Heuchera cylindrica var. alpina (11)
Heuchera cylindrica var. glabella (6)
Heuchera duranii (10)
Heuchera elegans (3)
Heuchera glabra (1)
Heuchera hirsutissima (11)
Heuchera maxima (17)
Heuchera micrantha (26)
Heuchera micrantha var. diversifolia (1)
Heuchera micrantha var. erubescens (8)
Heuchera parishii (15)
Heuchera parviflora (2)
Heuchera parvifolia var. utahensis (2)
Heuchera pilosissima (13)
Heuchera richardsonii (2)
Heuchera rubescens (13)
Heuchera rubescens var. alpicola (21)
Heuchera rubescens var. versicolor (2)
Heuchera sanguinea (1)
Heuchera sp. (13)
Hibbertia scandens (1)
Hibiscadelphus distans (7)
Hibiscadelphus giffardianus (17)
Hibiscadelphus hualalaiensis (10)
Hibiscus aethiopicus (3)
Hibiscus aponeurus (2)
Hibiscus brackenridgei (4)
Hibiscus denudatus (51)
Hibiscus flavifolius (1)
Hibiscus lasiocarpos (2)
Hibiscus lasiocarpos var. occidentalis (7)
Hibiscus lasiocarpus (24)
Hibiscus militaris (1)
Hibiscus moscheutos (1)
Hibiscus mutabilis (1)
Hibiscus pycnostemon (1)
Hibiscus rosa-sinensis (40)
Hibiscus rosa-sinensis cv. Sylvia Goodman (1)
Hibiscus rosa-sinensis var. (4)
Hibiscus sabdariffa (5)
Hibiscus schizopetalus (5)
Hibiscus sp. (12)
Hibiscus syriacus (15)
Hibiscus tiliaceus subsp. tiliaceus 'Purau Ute' (1)
Hibiscus tiliaceus tiliaceus (6)
Hibiscus tiliaceus var. populneus (1)
Hibiscus trionum (10)
Hibiscus x archeri (4)
Hieracium albiflorum (62)
Hieracium argutum (11)
Hieracium aurantiacum (15)
Hieracium caespitosum (5)
Hieracium cynoglossoides (2)
Hieracium dollineri (6)
Hieracium fendleri (3)
Hieracium gracile (9)
Hieracium grandidens (2)
Hieracium greenei (13)
Hieracium horridum (35)
Hieracium lachenalii (3)
Hieracium medium (1)
Hieracium murorum (5)
Hieracium pannosum (5)
Hieracium parryi (3)
Hieracium pilosella (17)
Hieracium piloselloides (3)
Hieracium pilosum (2)
Hieracium robinsonii (5)
Hieracium scabrum (6)
Hieracium scabrum var. scabrum (3)
Hieracium scouleri (19)
Hieracium scouleri var. nudicaule (1)
Hieracium sp. (1)
Hieracium triste (7)
Hieracium umbellatum (7)
Hieracium vagum (3)
Hieracium villosum (3)
Hieracium vulgatum (3)
Hierochloe occidentalis (15)
Hierochloe odorata (24)
Hilaria jamesii (7)
Hilaria rigida (19)
Hildenbrandia galapagensis (1)
Hillebrandia sandwicensis (2)
Himantoglossum adriaticum (3)
Hippeastrum sp. (2)
Hippeastrum stylosum (6)
Hippeastrum vittatum (1)
Hippobroma longiflora (3)
Hippocrepis comosa (11)
Hippocrepis unisiliquosa (5)
Hippophae rhamnoides (8)
Hippuris montana (1)
Hippuris vulgaris (18)
Hiraea grandifolia (1)
Hiraea purpusii (2)
Hirschfeldia incana (50)
Hirschfeldtia incana (1)
Histiopteris incisa (16)
Hoffmannseggia glauca (26)
Hoffmannseggia microphylla (8)
Hoffmannseggia sp. (1)
Hoffmannseggia trifoliata (1)
Hofmeisteria fasciculata (1)
Hohenbergia blanchetii (33)
Hoita macrostachya (13)
Hoita orbcularis (2)
Hoita orbicularis (13)
Hoita strobilina (47)
Holarrhena pubescens (2)
Holcoglossum flavescens (1)
Holcus lanatus (33)
Holcus mollis (6)
Hollisteria lanata (15)
Holmskioldia sanguinea (1)
Holmskioldia sanguinea f. citrina (1)
Holocarpha heemannii (4)
Holocarpha heermannii (28)
Holocarpha macradenia (12)
Holocarpha obconica (13)
Holocarpha virgata (17)
Holocarpha virgata ssp. elongata (7)
Holocarpha virgata ssp. virgata (20)
Holodiscus boissieri (1)
Holodiscus discolor (68)
Holodiscus discolor var. discolor (1)
Holodiscus discolor var. microphyllus (1)
Holodiscus dumosus (17)
Holodiscus dumosus var. cedorus (4)
Holodiscus glabrescens (1)
Holodiscus microphyllus (11)
Holodiscus microphyllus var. glabrescens (18)
Holodiscus microphyllus var. microphyllus (8)
Holopyxidium sp. nov. (27)
Holosteum umbellatum (2)
Holozonia felipes (1)
Holozonia filipes (7)
Homalocladium platycladium (1)
Homalocladium platycladum (1)
Homalomena picturata (1)
Homalothecium arenarium (5)
Homalothecium californicum (2)
Homalothecium nevadense (6)
Homalothecium nutallii (2)
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Homalothecium - Hyssopus
Homalothecium nuttallii (2)
Homalothecium pinnatifidum (10)
Homalothecium pinnatifidum? (1)
Homalothecium sp. (4)
Homeria elegans (1)
Homogyne alpina (4)
Homogyne sylvestris (7)
Honckenya peploides (2)
Honckenya peploides ssp. diffusa (2)
Hoodia gordonii (5)
Hoodia juttae (2)
Hoodia ruschii (2)
Hookeria lucens (3)
Hordeum arizonicum (7)
Hordeum brachyantherum (18)
Hordeum brachyantherum ssp. brachyantherum (4)
Hordeum brachyantherum ssp. californicum (7)
Hordeum depressum (8)
Hordeum intercedens (13)
Hordeum jubatum (16)
Hordeum jubatum ssp. jubatum (2)
Hordeum marinum (4)
Hordeum marinum ssp. gussoneanum (12)
Hordeum murinum (21)
Hordeum murinum ssp. glaucum (8)
Hordeum murinum ssp. leporinum (15)
Hordeum sp. (2)
Hordeum vulgare (4)
Horkelia bolanderi (9)
Horkelia californica (10)
Horkelia californica ssp. californica (1)
Horkelia californica ssp. dissita (3)
Horkelia californica ssp. frondosa (2)
Horkelia californica var. elata (2)
Horkelia clevelandii (1)
Horkelia congesta ssp. nemorosa (1)
Horkelia congesta var. nemorosa (2)
Horkelia cuneata (15)
Horkelia cuneata ssp. cuneata (12)
Horkelia cuneata ssp. puberula (14)
Horkelia cuneata ssp. sericea (2)
Horkelia daucifolia (5)
Horkelia daucifolia ssp. latior (2)
Horkelia daucifolia var. caruifolia (3)
Horkelia daucifolia var. indicta (11)
Horkelia fusca (13)
Horkelia fusca ssp. parviflora (21)
Horkelia hendersonii (8)
Horkelia hispidula (20)
Horkelia marinensis (33)
Horkelia parryi (28)
Horkelia rydbergii (7)
Horkelia sericata (9)
Horkelia sp. (2)
Horkelia tenuiloba (12)
Horkelia tridentata (25)
Horkelia tridentata ssp. tridentata (23)
Horkelia truncata (13)
Horkelia tularensis (3)
Horkelia wilderae (10)
Horkelia yadonii (10)
Horkeliella congdonis (14)
Horkeliella purpuracsens (1)
Horkeliella purpurascens (4)
Hormidium prismatocarpum (1)
Horminum pyrenaicum (5)
Horsfordia alata (1)
Horsfordia newberryi (13)
Hosackia crassifolia (3)
Hosackia crassifolia var. crassifolia (9)
Hosackia crassifolius var. crassifolius (1)
Hosackia gracilis (13)
Hosackia oblongifolia (3)
Hosackia oblongifolia var. oblongifolia (9)
Hosackia pinnata (2)
Hosackia rosea (5)
Hosackia stipularis var. ottleyi (6)
Hosackia stipularis var. stipularis (5)
Hosta kikutii var. caput-avis (1)
Hosta sieboldiana (1)
Hosta sp. (6)
Hosta tokudama (1)
Hosta undulata (1)
Hosta ventricosa (2)
Houlletia wallisii (2)
Houstonia caerulea (9)
Houstonia rubra (4)
Houttuynia cordata (8)
Howellanthus dalesianus (3)
Howellia aquatilis (1)
Hoya australis (1)
Hoya wibergiae (1)
Huernia confusa (1)
Huernia keniensis (2)
Huernia kennedyana (1)
Hulsea algida (31)
Hulsea brevifolia (33)
Hulsea californica (24)
Hulsea heterochroma (35)
Hulsea nana (42)
Hulsea vestita (8)
Hulsea vestita ssp. callicarpha (18)
Hulsea vestita ssp. gabrielensis (18)
Hulsea vestita ssp. inyoensis (6)
Hulsea vestita ssp. parryi (12)
Hulsea vestita ssp. pygmaea (9)
Hulsea vestita ssp. vestita (13)
Humata anderssonii (8)
Humata pectinata (14)
Humata werneri (1)
Humulus lupulus (21)
Humulus sp. (1)
Huperzia brassii (1)
Huperzia copelandiana (1)
Huperzia copelandii (1)
Huperzia foliosa (1)
Huperzia lucidula (1)
Huperzia parksii (1)
Huperzia phlegmaria (6)
Huperzia reflexa (1)
Huperzia ribourtii (16)
Huperzia selago (9)
Huperzia squarrosa (12)
Huperzia trifoliata (1)
Huperzia vanikorensis (1)
Hutchinsia procumbens (13)
Hyacinthoides lingulata (2)
Hyacinthoides non-scripta (1)
Hyacinthoides x massartiana (3)
Hyacinthus orientalis (6)
Hydnophytum formicarum (2)
Hydrangea (1)
Hydrangea anomala ssp. petiolaris (2)
Hydrangea arborescens (1)
Hydrangea macrophylla (8)
Hydrangea macrophylla ssp. serrata (1)
Hydrangea paniculata (7)
Hydrangea quercifolia (4)
Hydrangea serrata (1)
Hydrastis canadensis (2)
Hydrilla verticillata (24)
Hydrocharis morsus-ranae (2)
Hydroclathrus clathratus (2)
Hydrocotyle ranunculoides (4)
Hydrocotyle sibthorpioides (6)
Hydrocotyle sp. (1)
Hydrocotyle umbellata (7)
Hydrocotyle verticillata (4)
Hydrocotyle verticillata var. triradiata (1)
Hydrogrimmia mollis (1)
Hydrolea corymbosa (1)
Hydrolithon (6)
Hydrolithon reinboldii (2)
Hydropectis aquatica (1)
Hydrophyllum appendiculatum (3)
Hydrophyllum capitatum (6)
Hydrophyllum capitatum var. alpinum (40)
Hydrophyllum capitatum var. capitatum (4)
Hydrophyllum fendleri (1)
Hydrophyllum occidentale (47)
Hydrophyllum sp. (1)
Hydrophyllum tenuipes (10)
Hydrophyllum virginianum (7)
Hygrohypnum alpinum (2)
Hygrohypnum ochraceum (2)
Hygrophila polysperma (2)
Hylocereus costaricensis (1)
Hylocereus sp. (2)
Hylocereus triangularis (1)
Hylocereus undatus (8)
Hylocomium splendens (14)
Hylomecon japonicum (1)
Hylomecon vernalis (7)
Hylotelephium erythrostictum fa. variegatum (1)
Hylotelephium sieboldii (3)
Hylotelephium spectabile (6)
Hylotelephium telephium ssp. maximum (9)
Hylotelephium telephium ssp. telephium (8)
Hymenaea courbaril (2)
Hymenocallis caroliniana (3)
Hymenocallis latifolia (1)
Hymenocallis littoralis (3)
Hymenocallis narcissiflora (1)
Hymenocallis occidentalis var. occidentalis (1)
Hymenocallis pedalis (1)
Hymenocallis sp. (4)
Hymenoclea monogyra (2)
Hymenoclea salsola (32)
Hymenoclea salsola var. hybrid (5)
Hymenoclea salsola var. pentalepis (9)
Hymenoclea salsola var. salsola (3)
Hymenolepis parviflora (1)
Hymenopappus filifolius (15)
Hymenopappus filifolius var. eriopodus (6)
Hymenopappus filifolius var. lugens (5)
Hymenopappus filifolius var. megacephalus (3)
Hymenopappus filifolius var. nanus (21)
Hymenopappus filifolius var. polycephalus (1)
Hymenopappus tenuifolius (3)
Hymenophyllum digitatum (14)
Hymenophyllum flabellatum (17)
Hymenophyllum involucratum (1)
Hymenophyllum javanicum (18)
Hymenophyllum leptocarpum (1)
Hymenophyllum multifidum (23)
Hymenophyllum pallidum (13)
Hymenophyllum polyanthos (15)
Hymenophyllum tunbridgense (3)
Hymenophyllum tunbrigense (1)
Hymenophyllum wilsonii (1)
Hymenostylium recurvirostrum (4)
Hymenoxys acaulis var. arizonica (8)
Hymenoxys acaulis var. caespitosa (1)
Hymenoxys cooperi (24)
Hymenoxys cooperi var. canescens (10)
Hymenoxys grandiflora (7)
Hymenoxys hoopesii (30)
Hymenoxys lemmonii (9)
Hymenoxys odorata (7)
Hymenoxys richardsonii var. floribunda (9)
Hyophorbe verschaffeltii (3)
Hyoscyamus albus (11)
Hyoscyamus muticus (1)
Hyoscyamus niger (3)
Hyoseris radiata (9)
Hyoseris scabra (1)
Hyparrhenia hirta (6)
Hyparrhenia rufa (3)
Hypecoum imberbe (3)
Hypericum anagalloides (48)
Hypericum calycinum (5)
Hypericum canadense (3)
Hypericum canariense (17)
Hypericum chapmanii (1)
Hypericum concinnum (25)
Hypericum crux-andraea (1)
Hypericum formosum (7)
Hypericum formosum ssp. scouleri (3)
Hypericum formosum var. scouleri (29)
Hypericum gebleri (12)
Hypericum grandifolium (8)
Hypericum hirsutum (4)
Hypericum humifusum (1)
Hypericum kouytchense (1)
Hypericum patulum (4)
Hypericum perforatum (61)
Hypericum prolificum (7)
Hypericum punctatum (2)
Hypericum revolutum (1)
Hypericum scouleri (10)
Hypericum scouleri ssp. nortonia (1)
Hypericum scouleri ssp. scouleri (3)
Hypericum scouleri var. scouleri (3)
Hypericum tetrapetalum (1)
Hypericum triquetrifolium (7)
Hyphaene thebaica (1)
Hypnea (1)
Hypnea esperi (7)
Hypnea pannosa (4)
Hypnea saidana (7)
Hypnea spinella (3)
Hypnum revolutum (2)
Hypnum subimponens (4)
Hypochaeris glabra (36)
Hypochaeris radicata (49)
Hypochaeris sessiliflora (1)
Hypochoeris achyrophorus (6)
Hypoglossum abyssicola (1)
Hypoglossum simulans (2)
Hypolepis dicksonioides (4)
Hypolepis minima (1)
Hypolepis sparsisora (1)
Hypolepis tenuifolia (13)
Hypopitys monotropa (8)
Hypopitys uniflora (5)
Hypoxis hirsuta (4)
Hypoxis obtusa (1)
Hypseocharis pimpinelifolius (4)
Hyptis capitata (1)
Hyptis emory (1)
Hyptis emoryi (65)
Hyssopus officinalis (3)
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