Pachera candidissima (1)
Pachera multilobata (2)
Pachera multilobatus (1)
Pachicereus pesten-arboriginum (1)
Pachira aquatica (8)
Pachira oleagina (1)
Pachycereus marginatus (17)
Pachycereus pecten-aboriginum (8)
Pachycereus pectin-aborigium (1)
Pachycereus pringlei (93)
Pachycereus schottii (35)
Pachycereus sp. (2)
Pachycereus tepamo (1)
Pachycereus weberi (3)
Pachycormus discolor (33)
Pachycormus discolor var. pubescens (6)
Pachygone vitiensis (2)
Pachymenia saxicola (1)
Pachyphytum bracteosum (3)
Pachyphytum compactum (1)
Pachyphytum glutinicaule (1)
Pachyphytum kimnachii (1)
Pachyphytum oviferum (1)
Pachyphytum sp. (2)
Pachypleuria pectinata (2)
Pachypodium ambongense (1)
Pachypodium bispinosum (1)
Pachypodium densiflorum (1)
Pachypodium eburneum (1)
Pachypodium geayi (3)
Pachypodium lamerei (11)
Pachypodium lealii (7)
Pachypodium namaquanum (4)
Pachypodium rosulatum ssp. gracilius (12)
Pachypodium saundersii (2)
Pachypodium succulentum (3)
Pachypodium windsori (3)
Pachyrhizus erosa (2)
Pachysandra procumbens (2)
Pachysandra terminalis (11)
Pachystachys coccinea (1)
Pachystachys lutea (8)
Pachystachys spicata (1)
Pachystegia insignis (14)
Pachystima myrsinites (12)
Pachyveria sp. (5)
Packera aurea (13)
Packera bernardina (38)
Packera bolanderi var. bolanderi (32)
Packera breweri (40)
Packera cana (98)
Packera candidissima (7)
Packera clevelandii (29)
Packera crocata (3)
Packera cymbalarioides (4)
Packera dimorphophylla (2)
Packera eurycephala (10)
Packera eurycephala var. eurycephala (33)
Packera eurycephala var. lewisrosei (24)
Packera fendleri (12)
Packera ganderi (5)
Packera glabella (1)
Packera greenei (66)
Packera hesperia (6)
Packera indecora (6)
Packera ionophylla (63)
Packera layneae (80)
Packera macounii (24)
Packera multilobata (107)
Packera neomexicana (18)
Packera neomexicana var. mutabilis (8)
Packera neomexicana var. neomexicana (3)
Packera pauciflora (36)
Packera pauciflora; (2)
Packera paupercula (4)
Packera plattensis (11)
Packera pseudaurea (7)
Packera pseudaurea var. pseudaurea (2)
Packera quercetorum (4)
Packera sanguisorboides (2)
Packera scalaris var. scalaris (1)
Packera schweinitziana (4)
Packera streptanthifolia (46)
Packera streptanthifolia var. streptanthifolia (16)
Packera subnuda (4)
Packera subnuda var. subnuda (6)
Packera tridenticulata (5)
Packera werneriifolia (39)
Pacyveria sp. (1)
Padina (2)
Padina boryana (13)
Padina gymnospora (1)
Padina japonica (1)
Padina melemele cf (10)
Paederota bonarota (11)
Paederota lutea (5)
Paederota x-churchilli (3)
Paeonia broteri (4)
Paeonia brownii (79)
Paeonia californica (140)
Paeonia cambessedesii (2)
Paeonia delavayi (3)
Paeonia lactiflora (23)
Paeonia lutea (2)
Paeonia mascula ssp. russii (4)
Paeonia miokosewitschii (1)
Paeonia officinalis (15)
Paeonia sp. (19)
Paeonia suffruticosa (6)
Paeonia x hybrid (19)
Paepalanthus sp. (1)
Paesia divaricatissima (9)
Painteria elachistophylla (4)
Palafoxia arida (49)
Palafoxia arida ssp. arida (3)
Palafoxia arida var. arida (127)
Palafoxia arida var. gigantea (56)
Palafoxia feayi (4)
Palafoxia hookeriana (3)
Palafoxia linearis (8)
Palafoxia linearis var. linearis (9)
Palafoxia riograndensis (5)
Palafoxia rosea (2)
Palafoxia sphacelata (21)
Palafoxia texana var. ambigua (7)
Palafoxia texana var. texana (26)
Palicourea elata (3)
Palicourea guianensis (1)
Palisada parvipapillata (7)
Paliurus spina-christi (13)
Pallavicinia lyellii (1)
Pallenis maritima (3)
Pallenis spinosa (17)
Palmaria palmata (4)
Panax quinquefolius (12)
Panax trifolius (14)
Pancratium canariense (1)
Pancratium tenuifolium (1)
Pandanus basedowii (1)
Pandanus monticola (1)
Pandanus odoratissimus (5)
Pandanus sp. (2)
Pandanus spiralis (3)
Pandanus tectorius (9)
Pandanus tectorius var. laevis (1)
Pandanus utilis (4)
Pandanus vandermeeschii (2)
Pandanus veitchii (1)
Pandorea jasminoides (9)
Pandorea pandorana (15)
Panicum acuminatum (16)
Panicum acuminatum var. fasciculatum (26)
Panicum acuminatum var. lindheimeri (7)
Panicum acuminatum var. thermale (3)
Panicum antidotale (12)
Panicum capillare (33)
Panicum dichotomiflorum (3)
Panicum dichotomiflorum ssp. dichotomiflorum (6)
Panicum distichum (1)
Panicum hirticaule (3)
Panicum hirticaule ssp. hirticaule (7)
Panicum maximum (9)
Panicum miliaceum (1)
Panicum miliaceum ssp. miliaceum (3)
Panicum oligosanthes var. scribnerianum (7)
Panicum sonoran (5)
Panicum urvilleanum (19)
Panicum virgatum (2)
Pantoneura plocamioides (1)
Papaver alpinum ssp. ernesti-mayeri (8)
Papaver alpinum ssp. rhaeticum (5)
Papaver amurense (2)
Papaver argemone (1)
Papaver atlanticum (4)
Papaver californicum (34)
Papaver cambricum (2)
Papaver commutatum (11)
Papaver dahlianum (6)
Papaver dubium (1)
Papaver gorodkovii (4)
Papaver heterophylla (3)
Papaver heterophyllum (139)
Papaver hybridum (9)
Papaver lapponicum (14)
Papaver Macounii (2)
Papaver nudicaule (31)
Papaver orientale (15)
Papaver radicatum (12)
Papaver rhoeas (75)
Papaver setigerum (8)
Papaver somniferum (72)
Papaver sp. (5)
Papaveraceae sp. (1)
Paphinia posadarum (2)
Paphiopedilum adductum (2)
Paphiopedilum callosum (2)
Paphiopedilum gratrixianum (1)
Paphiopedilum henryanum (1)
Paphiopedilum hirsutissimum (1)
Paphiopedilum insigne var. sanderae (2)
Paphiopedilum kolopakingii (2)
Paphiopedilum micranthum (1)
Paphiopedilum newlandii (2)
Paphiopedilum parishii (1)
Paphiopedilum philippinense var. laevigatum (2)
Paphiopedilum spicerianum (2)
Paphiopedilum sukhakulii (2)
Paphiopedilum villosum (2)
Pappea capensis (10)
Pappophorum vaginatum (1)
Pappostipa speciosa (1)
Parablechnum cordatum (3)
Parablechnum novae-zelandiae (1)
Paracaleana nigrita (1)
Paradisea liliastrum (17)
Paragymnopteris bipinnata var. auriculata (2)
Paragymnopteris marantae (1)
Parajubaea cocoides (5)
Parajubaea torallyi (4)
Parapholis incurva (10)
Paraquilegia caespitosa (1)
Paraserianthes lophantha (33)
Parasponia andersonii (3)
Parathesis chiapensis (3)
Parentucellia latifolia (29)
Parentucellia latifolia ssp. albiflora (1)
Parentucellia viscosa (86)
Parietaria diffusa (9)
Parietaria hespera (4)
Parietaria hespera var. californica (6)
Parietaria hespera var. hespera (15)
Parietaria judaica (22)
Parietaria pensylvanica (17)
Parinari curatellifolia (13)
Parinari littoralis (16)
Paris quadrifolia (9)
Parkinsonia aculeata (51)
Parkinsonia florida (113)
Parkinsonia microphylla (67)
Parkinsonia praecox (11)
Parkinsonia praecox ssp. glauca (2)
Parkinsonia sp. (1)
Parkinsonia x sonorae (2)
Parmentiera aculeata (5)
Parnassia californica (5)
Parnassia cirrata (5)
Parnassia cirrata var. intermedia (47)
Parnassia fimbriata (43)
Parnassia fimbriata var. intermedia (8)
Parnassia glauca (20)
Parnassia palustris (113)
Parnassia palustris var. parviflora (1)
Parnassia parviflora (3)
Parnassia sp. (1)
Parodia dextrohamata (7)
Parodia dichroacantha (1)
Parodia erubescens (1)
Parodia faustiana (4)
Parodia haselbergii ssp. haselbergii (1)
Parodia horstii (1)
Parodia leninghausii (2)
Parodia maasii (2)
Parodia maassii (6)
Parodia magnifica (3)
Parodia mairanana (1)
Parodia mammulosa ssp. brasiliensis (2)
Parodia microsperma (5)
Parodia nivosa (2)
Parodia penicillata (1)
Parodia sanguiniflora (2)
Parodia schumanniana (3)
Parodia scopa (5)
Parodia scopa ssp. succinea (2)
Parodia sellowii (2)
Parodia stuemeri (1)
Parodia submammulosa (3)
Parodia tabularis (1)
Parodia tafiensis (2)
Parodia tilcarensis (1)
Parodia warasii (1)
Parodia werdermanniana (3)
Parodia werneri (1)
Parodiolyra micrantha (9)
Paronychia ahartii (27)
Paronychia canadensis (9)
Paronychia depressa (2)
Paronychia franciscana (11)
Paronychia jamesii (5)
Paronychia kapela (13)
Paronychia pulvinata (1)
Paronychia sessiflora (3)
Paronychia sessiliflora (20)
Parrotia persica (9)
Parrya nudicaulis (3)
Parryella filifolia (2)
Partenocissus quinquefolia (2)
Parthenice mollis (4)
Parthenium argentatum (1)
Parthenium confertum (12)
Parthenium confertum var. lyratum (2)
Parthenium hysterophorus (27)
Parthenium incanum (23)
Parthenium integrifolium (25)
Parthenocissus inserta (3)
Parthenocissus quinquefolia (22)
Parthenocissus sp. (1)
Parthenocissus tricuspidata (9)
Parthenocissus vitacea (17)
Parviphycus antipae (5)
Parvisedum pumilum (4)
Parvocaulis exigus (1)
Parvocaulis parvula (8)
Pascopyrum smithii (12)
Paspalum conjugatum (1)
Paspalum dilatatum (43)
Paspalum distichum (68)
Paspalum notatum (4)
Paspalum paniculatum (2)
Paspalum paspaloides (7)
Paspalum scrobiculatum (3)
Paspalum urvillei (7)
Paspalum vaginatum (13)
Paspalum virletii (3)
Passerina sp. (1)
Passiflora actinia (8)
Passiflora alata (15)
Passiflora alatocaerulea (3)
Passiflora caerulea (23)
Passiflora citrina (5)
Passiflora colinvauxii (1)
Passiflora contracta (13)
Passiflora edula (1)
Passiflora edulis (18)
Passiflora foetida (30)
Passiflora foetida var. galapagensi (1)
Passiflora galbana (7)
Passiflora huamachucoensis (1)
Passiflora incarnata (17)
Passiflora laurifolia (3)
Passiflora ligularis (8)
Passiflora loefgrenii x caerulia (1)
Passiflora lutea (13)
Passiflora maliformis (2)
Passiflora manicata (3)
Passiflora membranacea (6)
Passiflora mixta (2)
Passiflora mollissima (8)
Passiflora oaxacensis (1)
Passiflora pallida (1)
Passiflora parritae x passiflora tarminiana (2)
Passiflora pentaschista (5)
Passiflora pinnatistipula (1)
Passiflora quadrangularis (2)
Passiflora sp. (22)
Passiflora suberosa (4)
Passiflora suberosa ssp. litoralis (3)
Passiflora subpeltata (3)
Passiflora tarminiana (7)
Passiflora tenuiloba (19)
Passiflora terminiana (1)
Passiflora tripartita var. mollissima (2)
Passiflora vitifolia (3)
Passiflora x 'coral glow' (4)
Passiflora X alatocaerulea (2)
Pastinaca sativa (11)
Patersonia fragilis (2)
Patersonia juncea (3)
Patersonia occidentalis (2)
Patersonia sericea (3)
Patersonia umbrosa var. xanthina (3)
Paullinia tomentosa (5)
Paulownia fargesii (2)
Paulownia tomentosa (64)
Pavetta edentula (3)
Pavetta schumanniana (2)
Pavonia aurigloba (1)
Pavonia lasiopetala (5)
Paxistima myrsinites (47)
Pckera dimorphophylla (1)
Pearcea hypocyrtiflora (6)
Pecluma alfredii (2)
Pectiantia breweri (56)
Pectiantia ovalis (21)
Pectiantia pentandra (27)
Pectis angustifolia (2)
Pectis angustifolia v. tenella (3)
Pectis angustifolia var. angustifolia (12)
Pectis filipes (3)
Pectis longipes (3)
Pectis multisecta var. multisecta (5)
Pectis multiseta (5)
Pectis multiseta var. multiseta (2)
Pectis paposa (1)
Pectis papposa (55)
Pectis papposa var. papposa (105)
Pectis prostrata (7)
Pectis tenuifolia (2)
Pectocarya anisocarpa (1)
Pectocarya heterocarpa (30)
Pectocarya linearis (7)
Pectocarya linearis ssp. ferocula (28)
Pectocarya penicillata (63)
Pectocarya peninsularis (5)
Pectocarya platycarpa (58)
Pectocarya pusilla (27)
Pectocarya recurvata (75)
Pectocarya setosa (55)
Pectocarya spp (linearis & recurvata) (1)
Pedicularis angustifolia (7)
Pedicularis attollens (100)
Pedicularis attollens ssp. attollens (4)
Pedicularis bracteosa (22)
Pedicularis bracteosa var. atrosanguinea (4)
Pedicularis bracteosa var. bracteosa (1)
Pedicularis bracteosa var. flavida (13)
Pedicularis bracteosa var. paysoniana (8)
Pedicularis canadensis (18)
Pedicularis capitata (6)
Pedicularis centranthera (34)
Pedicularis chamissonis (1)
Pedicularis chihuahuensis (2)
Pedicularis comosa (6)
Pedicularis contorta (43)
Pedicularis contorta var. contorta (1)
Pedicularis crenulata (8)
Pedicularis cystopteridifolia (11)
Pedicularis densiflora (238)
Pedicularis dudleyi (21)
Pedicularis elongata ssp. julica (5)
Pedicularis eosa var. flavida (5)
Pedicularis foliosa (2)
Pedicularis groenlandica (120)
Pedicularis gyroflexa (1)
Pedicularis hirsuta (2)
Pedicularis howellii (5)
Pedicularis julica (7)
Pedicularis kanei (6)
Pedicularis kerneri (3)
Pedicularis lanata (5)
Pedicularis lanceolata (8)
Pedicularis langsdorffii (4)
Pedicularis langsdorffii ssp. arctica (1)
Pedicularis oederi (7)
Pedicularis ornithorhyncha (7)
Pedicularis palustris (8)
Pedicularis parryi (16)
Pedicularis parryi ssp. parryi (4)
Pedicularis parviflora (1)
Pedicularis procera (7)
Pedicularis racemosa (53)
Pedicularis racemosa ssp. alba (1)
Pedicularis racemosa var. alba (13)
Pedicularis rainierensis (3)
Pedicularis rostratocapitata (10)
Pedicularis rostratocapitata ssp. rostratocapitata (4)
Pedicularis semibarbata (122)
Pedicularis semibarbata var. charlestonensis (4)
Pedicularis sp. (5)
Pedicularis tuberosa (1)
Pedicularis verticillata (5)
Pedilanthus bracteatus (4)
Pedilanthus macrocarpus (29)
Pedilanthus tithymaloides (2)
Pediocactus bradyi (10)
Pediocactus despainii (4)
Pediocactus knowltonii (5)
Pediocactus paradinei (3)
Pediocactus peeblesianus (1)
Pediocactus peeblesianus ssp. menzelii (3)
Pediocactus sileri (15)
Pediocactus simpsonii (19)
Pediocactus simpsonii var. minor (1)
Pediocactus simpsonii var. nigrispina (2)
Pediocactus simpsonii var. nigrispinus (1)
Pediocactus simpsonii var. robustior (13)
Pediocactus simpsonii var. simpsonii (16)
Pediocactus sp. (1)
Pediomelum argophyllum (12)
Pediomelum californicum (60)
Pediomelum castoreum (22)
Pediomelum escuenta (1)
Pediomelum esculentum (16)
Pediomelum mephiticum (8)
Pediomelum pentaphyllum (2)
Pediomelum tenuiflorum (1)
Peganum harmala (30)
Peganum mexicanum (11)
Pelagodoxa henryana (2)
Pelargonium (1)
Pelargonium adriaanii (2)
Pelargonium alternans (4)
Pelargonium bowkeri (4)
Pelargonium capitatum (4)
Pelargonium carnosum ssp. rotundipetalum (1)
Pelargonium citrosum (1)
Pelargonium cordatum (2)
Pelargonium cordifolium (6)
Pelargonium cucullatum (2)
Pelargonium denticulatum (5)
Pelargonium domesticum (12)
Pelargonium drummondii (5)
Pelargonium echinatum (1)
Pelargonium exstipulatum (3)
Pelargonium fissifolium (4)
Pelargonium fragrans (3)
Pelargonium fulgidum (16)
Pelargonium graveolens (5)
Pelargonium grossularioides (17)
Pelargonium hortorum (18)
Pelargonium incarnatum (2)
Pelargonium ionidiflorum (2)
Pelargonium klinghardtense (2)
Pelargonium laevigatum (1)
Pelargonium laxum (1)
Pelargonium lobatum (1)
Pelargonium luridum (1)
Pelargonium mirabile (1)
Pelargonium odoratissimum (3)
Pelargonium ovale (1)
Pelargonium peltatum (19)
Pelargonium pulchellum (7)
Pelargonium punctatum (1)
Pelargonium quercifolium (2)
Pelargonium reniforme (6)
Pelargonium sidoides (2)
Pelargonium sp. (22)
Pelargonium tomentosum (11)
Pelargonium triste (4)
Pelargonium vitifolium (14)
Pelargonium x domesticum (2)
Pelargonium X domesticum pink (1)
Pelargonium x hortorum (15)
Pelargonium X hortorum red (1)
Pelecyphora aselliformis (20)
Pelecyphora strobiliformis (14)
Peleophycus multiprocarpium (14)
Pellaea andromedifolia (93)
Pellaea atropurpurea (10)
Pellaea brachyptera (26)
Pellaea brandegeei (1)
Pellaea breweri (21)
Pellaea bridgesii (30)
Pellaea calomelanos (1)
Pellaea falcata (2)
Pellaea glabella (4)
Pellaea glabella ssp. glabella (5)
Pellaea glabella var. occidentalis (2)
Pellaea glaciogena (1)
Pellaea mucronata (30)
Pellaea mucronata ssp. californica (2)
Pellaea mucronata ssp. mucronata (1)
Pellaea mucronata var. californica (42)
Pellaea mucronata var. mucronata (32)
Pellaea ovata (4)
Pellaea peruviana (1)
Pellaea rotundifolia (5)
Pellaea sp. (1)
Pellaea ternifolia (2)
Pellaea truncata (16)
Pellaea wrightiana (2)
Pellia endiviifolia (5)
Pellia epiphylla (12)
Peltandra sagittifolia (2)
Peltandra virginica (21)
Peltigera aphthosa (1)
Peltiphyllum peltatum (6)
Peltophorum africanum (22)
Peltophorum pterocarpum (3)
Pelvetia canaliculata (1)
Pelvetia fastigiata (1)
Pelvetiopsis limitata (4)
Pemphis acidula (2)
Penaea mucronata (1)
Peniocereus castellae (4)
Peniocereus cuixmalensis (5)
Peniocereus fosterianus (1)
Peniocereus fosterianus var. nizandensis (2)
Peniocereus greggii (5)
Peniocereus greggii var. greggii (7)
Peniocereus greggii var. transmontanus (6)
Peniocereus guatemalensis (4)
Peniocereus haakeanus (1)
Peniocereus johnstonii (5)
Peniocereus lazaro-cardenasii (3)
Peniocereus macdougallii (2)
Peniocereus maculatus (5)
Peniocereus marianus (6)
Peniocereus marnierianus (4)
Peniocereus oaxacensis (2)
Peniocereus occidentalis (3)
Peniocereus rosei (6)
Peniocereus serpentinus (3)
Peniocereus sp. (3)
Peniocereus striatus (13)
Peniocereus tepalcatepecanus (2)
Peniocereus viperinus (3)
Peniocereus zopilotensis (4)
Pennellia longifolia (3)
Pennisetum alopecuroides (8)
Pennisetum ciliare (19)
Pennisetum clandestinum (23)
Pennisetum glaucum (14)
Pennisetum latifolium (3)
Pennisetum messiacum (3)
Pennisetum oriebtale (1)
Pennisetum polystachion (2)
Pennisetum purpureum (7)
Pennisetum setaceum (53)
Pennisetum sp. (3)
Pennisetum villosum (20)
Peno hesperius (2)
Penstemon (2)
Penstemon acuminatus (1)
Penstemon acuminatus var. acuminatus (3)
Penstemon acuminatus var. latebracteatus (27)
Penstemon alamoensis (1)
Penstemon alamosensis (5)
Penstemon albertinus (4)
Penstemon albidus (24)
Penstemon albomarginatus (22)
Penstemon ambiguus (20)
Penstemon ambiguus var. laevissimus (10)
Penstemon anguineus (59)
Penstemon angustifolius (12)
Penstemon apaticus (1)
Penstemon arenicola (3)
Penstemon aridus (7)
Penstemon attenuatus (1)
Penstemon attenuatus var. palustris (8)
Penstemon azureus (26)
Penstemon azureus ssp. azureus (6)
Penstemon azureus var. angustissimus (24)
Penstemon azureus var. azureus (78)
Penstemon baccharifolius (23)
Penstemon barbatus (9)
Penstemon barbatus ssp. torreyi (11)
Penstemon barbatus var. praecox (1)
Penstemon barbatus var. torreyi (5)
Penstemon barbatus var. trichander (1)
Penstemon barnebyi (17)
Penstemon barrettiae (9)
Penstemon bicolor (21)
Penstemon bicolor ssp. bicolor (13)
Penstemon bicolor ssp. roseus (13)
Penstemon bracteatus (7)
Penstemon buckleyi (1)
Penstemon caesius (59)
Penstemon caespitosus (7)
Penstemon caespitosus var. desertipicti (8)
Penstemon calcareus (28)
Penstemon californicus (22)
Penstemon campanulatus (30)
Penstemon cardinalis (3)
Penstemon cardwellii (6)
Penstemon carnosus (5)
Penstemon centhrantifolius (1)
Penstemon centranthifolius (121)
Penstemon cinereus (1)
Penstemon cinicola (24)
Penstemon clevelandii (3)
Penstemon clevelandii var. clevelandii (46)
Penstemon clevelandii var. connatus (41)
Penstemon clevelandii var. mohavensis (6)
Penstemon clutei (6)
Penstemon comarrhenus (11)
Penstemon concerts (1)
Penstemon concinnus (16)
Penstemon confertus (23)
Penstemon confusus (32)
Penstemon cusickii (11)
Penstemon cyananthus (6)
Penstemon cyananthus var. cyananthus (7)
Penstemon cyananthus var. subglaber (5)
Penstemon cyaneus (16)
Penstemon davidsonii (53)
Penstemon davidsonii var. davidsonii (64)
Penstemon davidsonii var. menziesii (2)
Penstemon davidsonii var. praeteritus (6)
Penstemon debilis (4)
Penstemon decurvus (6)
Penstemon deustus (60)
Penstemon deustus var. deustus (15)
Penstemon deustus var. pedicellatus (20)
Penstemon deustus var. suffrutescens (23)
Penstemon digitalis (39)
Penstemon dolius (23)
Penstemon dolius var. dolius (4)
Penstemon eatonii (44)
Penstemon eatonii ssp. eatonii (2)
Penstemon eatonii ssp. undosus (7)
Penstemon eatonii var. eatonii (3)
Penstemon eatonii var. undosus (5)
Penstemon ellipticus (3)
Penstemon eriantherus (33)
Penstemon eriantherus var. eriantherus (18)
Penstemon euglaucus (20)
Penstemon faciculatus (3)
Penstemon fendleri (3)
Penstemon filiformis (29)
Penstemon floridus (12)
Penstemon floridus var. austinii (23)
Penstemon floridus var. floridus (60)
Penstemon fruticiformis (2)
Penstemon fruticiformis ssp. amargosae (4)
Penstemon fruticiformis var. amargosae (11)
Penstemon fruticiformis var. fruticiformis (23)
Penstemon fruticosus (29)
Penstemon gairdneri (13)
Penstemon gairdneri var. gairdneri (4)
Penstemon glaber (10)
Penstemon glaber var. alpinus (17)
Penstemon glaber var. brandegeei (2)
Penstemon globosus (7)
Penstemon gloxinoides (2)
Penstemon gracilentus (68)
Penstemon gracilis (21)
Penstemon grandiflorus (40)
Penstemon griffinii (3)
Penstemon grinnellii (69)
Penstemon grinnellii ssp. scrophularioides (3)
Penstemon grinnellii var. grinnellii (98)
Penstemon grinnellii var. scrophularioides (3)
Penstemon hallii (13)
Penstemon hartwegii (3)
Penstemon haydenii (2)
Penstemon hesperius (6)
Penstemon heterodoxus (39)
Penstemon heterodoxus var. cephalophorus (16)
Penstemon heterodoxus var. heterodoxus (59)
Penstemon heterodoxus var. shastensis (44)
Penstemon heterophyllum (1)
Penstemon heterophyllus (63)
Penstemon heterophyllus ssp. heterophyllus (5)
Penstemon heterophyllus var. australis (8)
Penstemon heterophyllus var. heterophyllus (69)
Penstemon heterophyllus var. purdyi (19)
Penstemon higginsii (3)
Penstemon hirsutus (1)
Penstemon humilis (48)
Penstemon humilis ssp. humilis (3)
Penstemon humilis ssp. obtusifolius (1)
Penstemon humilis var. brevifolius (5)
Penstemon humilis var. humilis (7)
Penstemon idahoensis (9)
Penstemon immanifestus (19)
Penstemon incertus (19)
Penstemon jamesii (8)
Penstemon janishiae (27)
Penstemon jonesii (13)
Penstemon kingii (10)
Penstemon kunthii (7)
Penstemon labrosus (70)
Penstemon laetus (49)
Penstemon laetus ssp. sagittatus (11)
Penstemon laetus var. laetus (78)
Penstemon laetus var. sagittatus (34)
Penstemon laevis (11)
Penstemon laricifolius (15)
Penstemon laricifolius ssp. exilifolius (4)
Penstemon laricifolius ssp. laricifolius (3)
Penstemon leatonii (1)
Penstemon leiophyllus (2)
Penstemon leiophyllus var. francisci-pennellii (5)
Penstemon leiophyllus var. leiophyllus (5)
Penstemon lentus var. lentus (4)
Penstemon leonardii var. leonardii (5)
Penstemon linarioides (3)
Penstemon linarioides ssp. coloradoensis (4)
Penstemon linarioides ssp. linarioides (3)
Penstemon lyallii (7)
Penstemon mensarum (1)
Penstemon miniata ssp. townsendianus (1)
Penstemon miniatus var. townsendianus (15)
Penstemon monoensis (32)
Penstemon moriahensis (3)
Penstemon nanus (7)
Penstemon neomexicanus (6)
Penstemon neotericus (19)
Penstemon newberryi (93)
Penstemon newberryi var. berryi (16)
Penstemon newberryi var. newberryi (82)
Penstemon newberryi var. sonomensis (21)
Penstemon nitidus (5)
Penstemon nitidus var. nitidus (6)
Penstemon osterhoutii (3)
Penstemon ovatus (6)
Penstemon pachyphyllus (23)
Penstemon pachyphyllus var. congestus (4)
Penstemon pallidus (15)
Penstemon palmeri (89)
Penstemon palmeri var. eglandulosus (5)
Penstemon palmeri var. palmeri (46)
Penstemon papillatus (13)
Penstemon parryi (34)
Penstemon parvulus (36)
Penstemon patens (44)
Penstemon payettensis (3)
Penstemon personatus (38)
Penstemon petiolatus (7)
Penstemon pinifolius (6)
Penstemon pinorum (7)
Penstemon platyphyllus (6)
Penstemon procerus (37)
Penstemon procerus var. brachyanthus (6)
Penstemon procerus var. formosus (18)
Penstemon procerus var. procerus (4)
Penstemon pseudoputus (4)
Penstemon pseudospectabilis (51)
Penstemon pseudospectabilis ssp. conatifolius (4)
Penstemon purpusii (24)
Penstemon radicosus (3)
Penstemon rattanii (4)
Penstemon rattanii var. kleei (13)
Penstemon rattanii var. rattanii (4)
Penstemon rhizomatosus (4)
Penstemon richardsonii (7)
Penstemon richardsonii var. dentatus (5)
Penstemon richardsonii var. richardsonii (6)
Penstemon roezli (2)
Penstemon roezlii (78)
Penstemon rostriflorus (184)
Penstemon rubicundus (22)
Penstemon rupicola (38)
Penstemon rydbergia (1)
Penstemon rydbergii (33)
Penstemon rydbergii var. aggregatus (3)
Penstemon rydbergii var. oreocharis (60)
Penstemon rydbergii var. rydbergii (10)
Penstemon scapoides (57)
Penstemon secundiflorus (8)
Penstemon seorsus (5)
Penstemon serrulatus (20)
Penstemon sp. (12)
Penstemon speciosus (171)
Penstemon spectabilis (75)
Penstemon spectabilis var. spectabilis (41)
Penstemon spectabilis var. subviscosus (22)
Penstemon spectabilis? (1)
Penstemon stenophyllus (11)
Penstemon stephensii (24)
Penstemon strictus (17)
Penstemon subglaber (10)
Penstemon subulatus (1)
Penstemon sudans (20)
Penstemon superbus (2)
Penstemon thompsonia (2)
Penstemon thompsoniae (29)
Penstemon thompsoniae ssp. jaegeri (12)
Penstemon thurberi (31)
Penstemon tracyi (29)
Penstemon triflorus (1)
Penstemon uintahensis (4)
Penstemon unilateralis (15)
Penstemon utahensis (72)
Penstemon venustus (12)
Penstemon virens (12)
Penstemon virgatus (1)
Penstemon virgatus var. asa-grayi (9)
Penstemon watsonii (22)
Penstemon whippleanus (52)
Penstemon wilcoxii (5)
Penstemon wislizeni (4)
Penstemon X dubius (6)
Penstemon X parishii (5)
Pentacalia peruviana (1)
Pentachaeta alsinoides (2)
Pentachaeta aurea (9)
Pentachaeta aurea ssp. allenii (4)
Pentachaeta aurea ssp. aurea (25)
Pentachaeta bellidiflora (19)
Pentachaeta exilis (6)
Pentachaeta exilis ssp. aeolica (32)
Pentachaeta exilis ssp. exilis (14)
Pentachaeta fragilis (13)
Pentachaeta lyonii (23)
Pentagramma glanduloviscida (21)
Pentagramma pallida (18)
Pentagramma triangularis (80)
Pentagramma triangularis ssp. maxonii (2)
Pentagramma triangularis ssp. rebmanii (24)
Pentagramma triangularis ssp. triangularis (31)
Pentagramma triangularis ssp. viscosa (41)
Pentagramma triangularis var. triangularis (5)
Pentalinon luteum (2)
Pentameris airoides ssp. airoides (6)
Pentaphylloides fruticosa (3)
Pentarhizidium intermedium (3)
Pentarhizidium orientale (1)
Pentas lanceolata (3)
Pentas lanceolata ssp. lanceolata (1)
Penthorum sedoides (16)
Pentstemon patens (4)
Pentzia incana (7)
Peperomia angulata (2)
Peperomia argyreia (4)
Peperomia asperula (2)
Peperomia campylotropa (4)
Peperomia caperata (6)
Peperomia columella (1)
Peperomia columnaris (2)
Peperomia dolabriformis (1)
Peperomia ferreyrae (1)
Peperomia floridans (2)
Peperomia grantii (4)
Peperomia graveolens (1)
Peperomia hernandiifolia (1)
Peperomia inaequalifolia (1)
Peperomia magnoliifolia (1)
Peperomia monticola (1)
Peperomia obtusifolia (3)
Peperomia pallida (1)
Peperomia pellucida (1)
Peperomia polybotrya (2)
Peperomia prostrata (2)
Peperomia puteolata (1)
Peperomia societatis (2)
Peperomia sp. (6)
Peperomia tetraphylla (1)
Peperomia verticillata (2)
Peplonia bradeana (10)
Peraphyllum ramosissimum (36)
Percallis hybrida (4)
Pereskia aculeata (5)
Pereskia sacharosa (1)
Pereskia weberiana (1)
Pereskiopsis porteri (10)
Perezia nana (1)
Perezia recurvata (7)
Perezia sp. (1)
Pericallis aurita (2)
Pericallis cruenta (1)
Pericallis sp. (2)
Pericallis steetzii (1)
Pericallis webbii (1)
Pericallis X hybrida (14)
Pericome caudata (42)
Perideridia bacigalupii (19)
Perideridia bolanderi (30)
Perideridia bolanderi ssp. bolanderi (27)
Perideridia californica (45)
Perideridia erythrorhiza (9)
Perideridia gairdneri (14)
Perideridia gairdneri ssp. borealis (3)
Perideridia gairdneri ssp. gairdneri (24)
Perideridia howellii (28)
Perideridia kelloggii (45)
Perideridia lemmonii (21)
Perideridia leptocarpa (9)
Perideridia oregana (16)
Perideridia parishii (64)
Perideridia parishii ssp. latifolia (13)
Perideridia parishii ssp. parishii (9)
Perideridia pringlei (52)
Perideridia sp. (1)
Perilla frutescens (13)
Perilla frutescens var. acuta (1)
Perilla frutescens var. crispa (9)
Periploca angustifolia (2)
Periscaria capitata (6)
Peritoma arborea (98)
Peritoma arborea var. angustata (42)
Peritoma arborea var. arborea (24)
Peritoma arborea var. globosa (63)
Peritoma lutea (39)
Peritoma multicaulis (6)
Peritoma platycarpa (12)
Peritoma serrulata (18)
Perityle angustifolia (9)
Perityle batopilensis (6)
Perityle bisetosa var. bisetosa (4)
Perityle californica (1)
Perityle carterae (1)
Perityle cernua (5)
Perityle crassifolia (12)
Perityle crassifolia var. robusta (12)
Perityle cuneata (2)
Perityle emoryi (124)
Perityle emoryii (2)
Perityle gilensis var. gilensis (5)
Perityle inyoensis (12)
Perityle leptoglossa (7)
Perityle megalocephala var. megalocephala (24)
Perityle megalocephala var. oligophylla (11)
Perityle microcephala (11)
Perityle microglossa (1)
Perityle microglossa var. saxosa (5)
Perityle palmeri (8)
Perityle parryi (11)
Perityle rotundifolia (6)
Perityle stansburyi (2)
Perityle staurophylla var. staurophylla (3)
Perityle tenella (6)
Perityle vandevenderi (4)
Perityle vaseyi (22)
Perityle villosa (22)
Pernettya prostrata (2)
Pernettya pumila (1)
Perovskia x (5)
Perrottetia longistylis (2)
Perrottetia sandwicensis (10)
Persea americana (45)
Persea donnelsmithii (2)
Persea indica (4)
Persea lingue (6)
Persicaria amphibia (100)
Persicaria amphibia var. stipulacea (8)
Persicaria amplexicaulis (1)
Persicaria capitata (3)
Persicaria coccinea (12)
Persicaria glabra (1)
Persicaria hydropiper (3)
Persicaria hydropiperoides (26)
Persicaria lapathifolia (42)
Persicaria maculosa (21)
Persicaria micrcephala (1)
Persicaria pennsylvanica (2)
Persicaria pensylvanica (1)
Persicaria perfoliata (1)
Persicaria punctata (41)
Persicaria punctata x hydropiper (5)
Persicaria punctata; (3)
Persicaria sagittata (8)
Persicaria virginiana (9)
Persicaria wallichii (5)
Pertiyle cuneata (1)
Perymenium oxycarphum (3)
Pescatorea lehmanii (2)
Petalacte coronata (1)
Petalonix thurberi (1)
Petalonyx linearis (49)
Petalonyx nitidus (33)
Petalonyx parryi (4)
Petalonyx thurberi (33)
Petalonyx thurberi ssp. gilmanii (12)
Petalonyx thurberi ssp. thurberi (86)
Petalostemum purpureum (2)
Petasites albus (13)
Petasites amplus (1)
Petasites fragrans (15)
Petasites frigidus (12)
Petasites frigidus var. palmatus (102)
Petasites frigidus var. sagitatus (1)
Petasites hybridus (7)
Petasites japonicus (2)
Petasites paradoxus (7)
Petasites sagittatus (1)
Peteria thompsoniae (14)
Petradoria pumila ssp. pumila (3)
Petradoria pumila var. pumila (18)
Petrea volubilis (6)
Petrocallis pyrenaica (5)
Petrocelis sp. (1)
Petrocosmea begonifolia (2)
Petromarula pinnata (5)
Petrophila longifolia (1)
Petrophile linearis (5)
Petrophytum caespitosum (42)
Petrophytum caespitosum ssp. acuminatum (2)
Petrophytum caespitosum ssp. caespitosum (25)
Petrorhagia dubia (56)
Petrorhagia nanteuilii (3)
Petrorhagia prolifera (10)
Petrorhagia saxifraga (15)
Petrorhagia velutina (4)
Petrosedum forsterianum (1)
Petrosedum ochroleucum (8)
Petrosedum pruinatum (1)
Petrosedum rupestre (3)
Petrosedum sediforme (6)
Petroselinum crispum (13)
Petroselinum crispum var. neapolitanum (2)
Petunia axillaris (2)
Petunia exserta (2)
Petunia grandiflora (1)
Petunia hybrida (2)
Petunia integrifolia (11)
Petunia multiflora (1)
Petunia parviflora (26)
Petunia sp. (84)
Petunia x hybrida (34)
Petunia x violacea (1)
Peucedanum japonicum (2)
Peucedanum ostruthium (2)
Peucedanum verticillare (8)
Peucephyllum schottii (107)
Peucephyllum shottii (1)
Peumus boldus (8)
Pextocarya platycarpa (1)
Peyssonnelia (42)
Peyssonnelia boergesenii (2)
Peyssonnelia bornetii cf (7)
Peyssonnelia inamoena (4)
Peyssonnelia sp. (3)
Peyssonnelia sp.3 (6)
Pfeiffera ianthothele (3)
Phacelia adenophora (22)
Phacelia affinis (19)
Phacelia alba (5)
Phacelia anelsonii (15)
Phacelia argentea (18)
Phacelia arizonica (16)
Phacelia austromontana (47)
Phacelia barnebyana (10)
Phacelia bicolor (73)
Phacelia bicolor var. bicolor (4)
Phacelia bipinnatifida (2)
Phacelia bolanderi (54)
Phacelia brachyloba (53)
Phacelia breweri (47)
Phacelia californica (104)
Phacelia calthifolia (115)
Phacelia campanularia (105)
Phacelia campanularia ssp. vasiformis (2)
Phacelia campanularia var, campanularia (3)
Phacelia campanularia var. campanularia (35)
Phacelia campanularia var. vasiformis (55)
Phacelia cicutaria (44)
Phacelia cicutaria var. cicutaria (72)
Phacelia cicutaria var. hispida (97)
Phacelia ciliata (89)
Phacelia ciliata var. ciliata (4)
Phacelia cloudcroftensis (2)
Phacelia coerulea (29)
Phacelia congdonii (51)
Phacelia congesta (24)
Phacelia cookei (6)
Phacelia corymbosa (36)
Phacelia crenulata (99)
Phacelia crenulata var. ambigua (97)
Phacelia crenulata var. corrugata (1)
Phacelia crenulata var. crenulata (30)
Phacelia crenulata var. minutiflora (36)
Phacelia cryptantha (50)
Phacelia curvipes (91)
Phacelia damnationensis (37)
Phacelia davidsonii (75)
Phacelia distans (217)
Phacelia distans var. australis (1)
Phacelia divaricata (51)
Phacelia dividsonii (2)
Phacelia douglasii (56)
Phacelia douglasii var. petrophila (4)
Phacelia egena (49)
Phacelia eisenii (45)
Phacelia eisenii var. brandegeeana (14)
Phacelia exilis (23)
Phacelia filiae (9)
Phacelia fimbriata (6)
Phacelia floribunda (17)
Phacelia fremontii (190)
Phacelia fremontii; (1)
Phacelia glandulifera (7)
Phacelia grandiflora (51)
Phacelia greenei (16)
Phacelia grisea (30)
Phacelia gymnoclada (13)

Phacelia hastata (29)
Phacelia hastata ssp. compacta (36)
Phacelia hastata ssp. hastata (5)
Phacelia hastata var. compacta (71)
Phacelia hastata var. hastata (46)
Phacelia heterophila (6)
Phacelia heterophylla (8)
Phacelia heterophylla ssp. virgata (27)
Phacelia heterophylla var. heterophylla (11)
Phacelia heterophylla var. virgata (35)
Phacelia hirsuta (3)
Phacelia hirtuosa (1)
Phacelia hubbyi (10)
Phacelia humilis (39)
Phacelia humilis var. dudleyi (2)
Phacelia humilis var. humilis (33)
Phacelia hydrophiloides (1)
Phacelia hydrophylloides (67)
Phacelia imbicata (2)
Phacelia imbricata (53)
Phacelia imbricata ssp. imbricata (11)
Phacelia imbricata var. bernardina (1)
Phacelia imbricata var. imbricata (51)
Phacelia imbricata var. patula (7)
Phacelia incana (5)
Phacelia insularis (2)
Phacelia insularis ssp. continentalis (1)
Phacelia insularis var. continentalis (6)
Phacelia insularis var. continentis (33)
Phacelia insularis var. insularis (8)
Phacelia integrifolia (6)
Phacelia integrifolia var. integrifolia (11)
Phacelia integrifolia var. texana (14)
Phacelia intermedia (15)
Phacelia inundata (2)
Phacelia inyoensis (13)
Phacelia ivesiana (21)
Phacelia keckii (29)
Phacelia lemmonii (5)
Phacelia leonis (16)
Phacelia liinearis (1)
Phacelia linearis (91)
Phacelia loasifolia (3)
Phacelia longipes (22)
Phacelia lutea var. lutea (14)
Phacelia lutea var. scopulina (1)
Phacelia lyallii (1)
Phacelia lyonii (3)
Phacelia malvifolia (45)
Phacelia malvifolia var. malvifolia (14)
Phacelia marcescens (23)
Phacelia minor (114)
Phacelia mohavensis (24)
Phacelia monoensis (24)
Phacelia mustelina (21)
Phacelia mutabilis (71)
Phacelia nashiana (68)
Phacelia neglecta (31)
Phacelia nemoralis (10)
Phacelia nemoralis var. nemoralis (16)
Phacelia novenmillensis (6)
Phacelia orogenes (1)
Phacelia pachyphylla (48)
Phacelia palmeri (17)
Phacelia parishii (26)
Phacelia parryi (89)
Phacelia parryi and Phacelia hirtuosa (1)
Phacelia pauciflora (2)
Phacelia pedicellata (67)
Phacelia peirsoniana (6)
Phacelia perityloides (34)
Phacelia perityloides var. jaegeri (8)
Phacelia perityloides var. perityloides (2)
Phacelia phacelioides (24)
Phacelia pinkavae (4)
Phacelia platicarpa (2)
Phacelia platycarpa var. platycarpa (4)
Phacelia platyloba (9)
Phacelia popei (18)
Phacelia pringlei (32)
Phacelia procera (22)
Phacelia pulchella var. gooddingii (19)
Phacelia purpusii (72)
Phacelia quickii (92)
Phacelia racemosa (17)
Phacelia ramosissima (96)
Phacelia rattanii (4)
Phacelia rotundifolia (71)
Phacelia ruprestris (1)
Phacelia saxicola (22)
Phacelia secunda (5)
Phacelia sericea (54)
Phacelia sericea ssp. ciliosa (6)
Phacelia sericea ssp. sericea (1)
Phacelia sericea var. ciliosa (5)
Phacelia sericea var. sericea (11)
Phacelia sivinskii (2)
Phacelia sp. (17)
Phacelia stebbinsii (57)
Phacelia stellaris (68)
Phacelia suaveolens (32)
Phacelia tanacetifolia (105)
Phacelia tetramera (5)
Phacelia thermalis (4)
Phacelia vallicola (68)
Phacelia vallis-mortae (48)
Phacelia viscida (45)
Phacelia viscida var. albiflora (8)
Phacelia viscida var. viscida (9)
Phacellia crenulata (6)
Phaenocoma prolifera (3)
Phaeoceros carolinianus (1)
Phaeoptilum spinosum (9)
Phagnalon graecum (4)
Phagnalon rupestre (6)
Phaiphleps biflora (1)
Phaius tankervilleae (3)
Phalacroseris bolanderi (19)
Phalaenopsis (2)
Phalaenopsis amabilis (3)
Phalaenopsis celebensis (4)
Phalaenopsis hybrid (2)
Phalaenopsis lueddemanniana var. ochracea (1)
Phalaenopsis pulchra (1)
Phalaenopsis sp. (20)
Phalaenopsis stuartiana (2)
Phalaris angusta (6)
Phalaris aquatica (40)
Phalaris arundinacea (64)
Phalaris brachystachys (11)
Phalaris californica (28)
Phalaris canariensis (16)
Phalaris coerulescens (4)
Phalaris lemmonii (30)
Phalaris minor (26)
Phalaris paradoxa (23)
Phascum cuspidatum (2)
Phaseolus acutifolius (1)
Phaseolus angustissimus (11)
Phaseolus caracalla (2)
Phaseolus filiformis (41)
Phaseolus maculatus (1)
Phaseolus maculatus ssp. maculatus (4)
Phaseolus montanus (1)
Phaseolus parvulus (5)
Phaseolus pauciforus (1)
Phaseolus pedicellatus var. grayanus (3)
Phaseolus vulgaris (20)
Phebalium stenophyllum (2)
Phebalium woombye (1)
Phedimus kamtschaticus (2)
Phedimus obtusifolius (1)
Phedimus stellatus (5)
Phedimus stoloniferus (1)
Phegopteris connectilis (44)
Phelipanche ramosa (1)
Phellodendron amurense (8)
Phellodendron chinense (2)
Phellodendron sachalinense (2)
Phemeranthus mengesii (11)
Phemeranthus rugospermus (24)
Phemeranthus teretifolius (1)
Philadelphus calcicolus (3)
Philadelphus coronarius (5)
Philadelphus inodorus var. grandiflorus (1)
Philadelphus lewisii (121)
Philadelphus microphyllus (67)
Philadelphus serpyllifolium (1)
Philadelphus sp. (2)
Philadelphus tenuifolius (10)
Philadelphus X virginalis (2)
Philenoptera sutherlandii (4)
Philenoptera violacea (14)
Philenoptera violaceae (4)
Philesia magellanica (5)
Phillodendron selloum (1)
Phillyrea latifolia var. media (3)
Philodendron acutatum (12)
Philodendron bipinnatifidum (2)
Philodendron erubescens (1)
Philodendron erubescens 'Red Emerald' (1)
Philodendron fragrantissimum (8)
Philodendron gloriosum (1)
Philodendron hederaceum (1)
Philodendron lacerum (1)
Philodendron radiatum (2)
Philodendron rugosum (1)
Philodendron scandens (1)
Philodendron selloum (2)
Philodendron sp. (3)
Philodendron squamiferum (1)
Philodendron surinamense (13)
Philodendron xanadu (1)
Philodendron xandu (1)
Philonotis fontana (2)
Philonotis yezoana (7)
Phlebodium pseudoaureum (4)
Phleum alpinum (15)
Phleum arenarium (2)
Phleum echinatum (4)
Phleum pratense (58)
Phleum subulatum (1)
Phlomis alpina (2)
Phlomis cashmeriana (1)
Phlomis fruticosa (9)
Phlomis herba-venti (9)
Phlomis kashmeriana (1)
Phlomis lanata (7)
Phlomis lychnitis (2)
Phlomis purpurea (4)
Phlomis tuberosa (3)
Phlomis viscosa (9)
Phlomoides laciniata (1)
Phlox aculeata (1)
Phlox adsurgens (28)
Phlox albomarginata (5)
Phlox alyssifolia (10)
Phlox andicola (9)
Phlox austromontana (53)
Phlox bifida (2)
Phlox bifida ssp. stellaria (2)
Phlox caespitosa (14)
Phlox condensata (67)
Phlox covillei (4)
Phlox diffusa (172)
Phlox diffusa ssp. longistylis (3)
Phlox diffuse (1)
Phlox dispersa (2)
Phlox divaricata (12)
Phlox divaricata ssp. laphamii (11)
Phlox dolichantha (62)
Phlox douglasii (4)
Phlox drummondii (2)
Phlox glaberrima (8)
Phlox gracilis (5)
Phlox griseola ssp. tumulosa (4)
Phlox hirsuta (22)
Phlox hoodii (21)
Phlox hoodii ssp. canescens (40)
Phlox hoodii ssp. muscoides (5)
Phlox longifolia (42)
Phlox longifolia ssp. longifolia (4)
Phlox longlifloria (3)
Phlox maculata (7)
Phlox mesoleuca (8)
Phlox multiflora (15)
Phlox muscoides (8)
Phlox nana (24)
Phlox nana ssp. ensifolia (3)
Phlox paniculata (22)
Phlox pilosa (4)
Phlox pilosa ssp. fulgida (10)
Phlox pilosa ssp. pilosa (8)
Phlox pulvinata (23)
Phlox roemeriana (4)
Phlox sibirica (1)
Phlox sp. (8)
Phlox speciosa (86)
Phlox speciosa ssp. occidentalis (20)
Phlox stansburyi (82)
Phlox stansburyi ssp. stansburyi (13)
Phlox stansburyi ssp. superba (1)
Phlox stansbuyi (1)
Phlox stolonifera (2)
Phlox subulata (7)
Phlox triovulata (14)
Phlox viscida (1)
Phoebanthus grandiflorus (2)
Phoebanthus tenuifolius (3)
Phoebe sheareri (2)
Phoenicaulis cheiranthoide (2)
Phoenicaulis cheiranthoides (76)
Phoenicophorium borsigianum (4)
Phoenicophorum borsigianum (3)
Phoenix canariensis (34)
Phoenix dactylifera (25)
Phoenix pusilla (1)
Phoenix reclinata (6)
Phoenix roebelenii (10)
Phoenix roebelinii (2)
Phoenix sp. (5)
Phoenix theophrastii (2)
Pholidota chinensis (1)
Pholisma arenarium (75)
Pholisma arenarrium (6)
Pholisma culiacana (1)
Pholisma sonorae (46)
Pholistoma auritum (50)
Pholistoma auritum var. arizonicum (25)
Pholistoma auritum var. auritum (93)
Pholistoma membranaceum (99)
Pholistoma racemosum (32)
Phoradendrom leucarpum ssp. tomentosum (1)
Phoradendron bolleanum (36)
Phoradendron californicum (115)
Phoradendron densum (6)
Phoradendron flavescens (1)
Phoradendron juniperinum (26)
Phoradendron leucarpum (7)
Phoradendron leucarpum ssp. macrophyllum (25)
Phoradendron leucarpum ssp. tomentosum (44)
Phoradendron libocedri (13)
Phoradendron macrophyllum (10)
Phoradendron pauciflorum (13)
Phoradendron serotinum ssp. macrophyllum (1)
Phoradendron sp. (7)
Phoradendron tomentosum (2)
Phoradendron villosum (23)
Phoradendron villosum ssp. coryae (5)
Phormium tenax (14)
Photinia davidsoniae (1)
Photinia fraseri (12)
Photinia glabra (1)
Photinia melanocarpa (10)
Photinia prionophylla (1)
Photinia serrulata (8)
Photinia sp. (4)
Photinia x fraseri (4)
Phragmipedium besseae (1)
Phragmipedium caudatum (3)
Phragmipedium caudatum var. giganteum (3)
Phragmipedium conchiferum (1)
Phragmipedium fischeri (1)
Phragmipedium lindenii (2)
Phragmipedium richterii (1)
Phragmipedium sargentianum (1)
Phragmipedium schlimii (2)
Phragmites australis (72)
Phragmites australis ssp. australis (2)
Phreatia myosorus (1)
Phrygilanthus sonorae (4)
Phryma leptostachya (21)
Phuopsis stylosa (6)
Phycella ignea (2)
Phycodrina elegans (1)
Phycodrys elegans (1)
Phygelius aequalis (2)
Phyla cuneifolia (3)
Phyla lanceolata (22)
Phyla nodiflora (79)
Phylica plumosa (3)
Phylica pubescens (10)
Phyllanthus acidus (1)
Phyllanthus amarus (2)
Phyllanthus angustifolius (1)
Phyllanthus debilis (1)
Phyllanthus emblica (1)
Phyllanthus myrtifolius (1)
Phyllanthus niruri (1)
Phyllanthus polygonoides (1)
Phyllanthus purpusii (1)
Phyllanthus tenellus (1)
Phyllanthus urceolatus (4)
Phyllanthus urinaria (2)
Phyllanthus virgatus (1)
Phyllitis scolopendrium (6)
Phyllobolus herbertii (2)
Phyllobolus latipetalus (3)
Phyllobolus prasinus (5)
Phyllobolus pumilus (2)
Phyllobolus tenuiflorus (5)
Phyllocladus alpinus (2)
Phyllocladus aspleniifolius (3)
Phyllocladus trichomanoides (2)
Phyllodictyon anastomosans (12)
Phyllodoce aleutica (2)
Phyllodoce breweri (101)
Phyllodoce caerulea (5)
Phyllodoce empetriformis (44)
Phyllodoce glandulifera (1)
Phyllodoce glanduliflora (19)
Phyllospadix scouleri (15)
Phyllospadix sp. (2)
Phyllospadix torreyi (16)
Phyllostachys aurea (1)
Phyllostachys nigra (2)
Phyllostachys parvifolia (2)
Phyllostachys sp. (2)
Phyllostachys vivax (5)
Phyllostegia ambigua (10)
Phyllostegia brevidens (8)
Phyllostegia floribunda (8)
Phyllostegia racemosa (4)
Phyllostegia velutina (8)
Phylotacca heteropetala (3)
Phymatidium falcifolium (3)
Phymatoceros phymatodes (2)
Phymatosorus grossus (5)
Phymatosorus sp. (3)
Phymosia umbellata (5)
Physalis acutifolia (12)
Physalis alkekengi (22)
Physalis alkekengi var. franchetii (2)
Physalis angulata (7)
Physalis cinerascens (5)
Physalis cinerascens var. cinerascens (11)
Physalis crassifolia (171)
Physalis crassifolia var. crassifolia (10)
Physalis crassifolia var. infundibularis (2)
Physalis foetens var. neomexicana (2)
Physalis glabra (9)
Physalis hederifolia (10)
Physalis hederifolia var. cordifolia (1)
Physalis hederifolia var. fendleri (4)
Physalis hederifolia var. palmeri (7)
Physalis heterophylla (4)
Physalis heterophylla var. heterophylla (8)
Physalis ixocarpa (8)
Physalis lanceifolia (17)
Physalis lobata (21)
Physalis minima (2)
Physalis peruviana (5)
Physalis philadelphica (14)
Physalis philadelphica var. immaculata (1)
Physalis pubescens (5)
Physalis pubescens var. grisea (8)
Physalis pubescens var. integrifolia (5)
Physalis purpurea (17)
Physalis sp. (6)
Physalis virginiana (4)
Physalis virginiana var. virginiana (16)
Physalis viscosa (2)
Physalis walteri (2)
Physaria acutifolia (8)
Physaria arenosa (3)
Physaria brassicoides (4)
Physaria chambersii (54)
Physaria didymocarpa (18)
Physaria didymocarpa var. didymocarpa (3)
Physaria didymocarpus (1)
Physaria fendleri (33)
Physaria floribunda (2)
Physaria gordonii (20)
Physaria kingii (6)
Physaria kingii ssp. bernardina (28)
Physaria kingii ssp. kingii (24)
Physaria kingii ssp. latifolia (21)
Physaria kingii ssp.kingii (1)
Physaria ludoviciana (34)
Physaria montana (5)
Physaria multiceps (3)
Physaria occidentalis (7)
Physaria occidentalis ssp. occidentalis (31)
Physaria peninsularis (3)
Physaria pinetorum (1)
Physaria purpurea (18)
Physaria reediana (9)
Physaria tenella (35)
Physcomitrium californicum (5)
Physocarpus alternans (9)
Physocarpus capitatus (127)
Physocarpus malvaceus (8)
Physocarpus monogynus (8)
Physocarpus opulifolius (31)
Physoplexis comosa (14)
Physostegia purpurea (1)
Physostegia virginiana (9)
Physostegia virginiana ssp. virginiana (10)
Phytelephas macrocarpa (1)
Phyteuma hemisphaericum (2)
Phyteuma orbiculare (17)
Phyteuma scheuchzeri (7)
Phyteuma sieberi (2)
Phyteuma sp. (1)
Phyteuma zahlbruckneri (5)
Phytolacca acinosa (2)
Phytolacca americana (55)
Phytolacca americana var. americana (59)
Phytolacca dioica (8)
Phytolacca heterotepala (7)
Phytolacca icosandra (16)
Phytolacca octandra (3)
Picea abies (56)
Picea bicolor (2)
Picea breweriana (46)
Picea chihuahuana (5)
Picea engelmannii (59)
Picea engelmannii ssp. mexicana (4)
Picea glauca (29)
Picea jezoensis (1)
Picea mariana (16)
Picea omorika (2)
Picea orientalis (23)
Picea pungens (54)
Picea rubens (5)
Picea sitchensis (99)
Picea smithiana (4)
Picea sp. (2)
Picea x fennica (1)
Picea x lutzii (2)
Pickeringia montana (53)
Pickeringia montana var. montana (50)
Pickeringia montana var. strigosa (5)
Pickeringia montana var. tomentosa (34)
Picradenia richardsonii var. floribunda (8)
Picradeniopis absinthifolia (6)
Picradeniopsis absinthifolia (8)
Picradeniopsis bigelovii (3)
Picradeniopsis oppositifolia (3)
Picradeniopsis woodhousei (4)
Picramnia glazioviana (19)
Picris echioides (1)
Picris hieracioides (14)
Picrothamnus desertorum (5)
Pieris floribunda (4)
Pieris formosa (1)
Pieris japonica (27)
Pieris japonica var. variegata (2)
Pieris nana (2)
Pieris rapae (3)
Pilanthus peduncularis (1)
Pilea cadierei (4)
Pilea microphylla (2)
Pilea nummulariifolia (1)
Pilea peperomioides (3)
Pilea pumila (7)
Piliostigma thonningii (3)
Pillansia templemannii (1)
Pilocarpus riedelianus (26)
Pilocereus alensis (2)
Pilocereus royenii (8)
Pilophorus acicularis (3)
Pilosella aurantiaca (2)
Pilosella horrida (1)
Pilosella praealta (1)
Pilosocereus alensis (6)
Pilosocereus aurisetus (3)
Pilosocereus cometes (1)
Pilosocereus glaucescens (1)
Pilosocereus glaucochrous (1)
Pilosocereus gounellei (1)
Pilosocereus lanuginosus (1)
Pilosocereus pachycladus (5)
Pilosocereus royenii (4)
Pilostyles thurberi (98)
Pilularia americana (18)
Pimelea calcicola (3)
Pimelea ciliata (2)
Pimelea ferruginea (4)
Pimelea linifolia (1)
Pimelea physodes (2)
Pimelea prostrata (2)
Pimelea suaveolens ssp. suaveolens (4)
Pimenta dioica (5)
Pimpinella major (2)
Pinanga coronata (4)
Pinanga kuhlii (3)
Pinaropappus procumbens (7)
Pinaropappus roseus (4)
Pinguicula agnata (2)
Pinguicula alpina (6)
Pinguicula antarctica (1)
Pinguicula caerulea (16)
Pinguicula caudata (2)
Pinguicula coerulea (1)
Pinguicula colimensis (3)
Pinguicula corsica (2)
Pinguicula cyclosecta (1)
Pinguicula debbertiana (2)
Pinguicula ehlersiae (1)
Pinguicula emarginata (3)
Pinguicula esseriana (4)
Pinguicula gigantea (3)
Pinguicula gracilis (2)
Pinguicula grandiflora (2)
Pinguicula gypsicola (8)
Pinguicula hemiepiphytica (1)
Pinguicula hirtiflora (4)
Pinguicula ionantha (13)
Pinguicula jaumavensis (3)
Pinguicula laueana (7)
Pinguicula leptoceras (2)
Pinguicula longifolia ssp. caussensis (4)
Pinguicula lusitanica (28)
Pinguicula lutea (24)
Pinguicula macroceras (82)
Pinguicula macroceras ssp. macroceras (27)
Pinguicula macrophylla (2)
Pinguicula mariae (4)
Pinguicula moctezumae (2)
Pinguicula moranensis (23)
Pinguicula moranensis x ehlersiae (1)
Pinguicula pilosa (1)
Pinguicula planifolia (27)
Pinguicula potosiensis (1)
Pinguicula primuliflora (27)
Pinguicula pumila (12)
Pinguicula pumila var. buswellii (3)
Pinguicula rectifolia (1)
Pinguicula reticulata (4)
Pinguicula rotundiflora (3)
Pinguicula sp. (6)
Pinguicula vallisneriifolia (31)
Pinguicula vulgaris (29)
Pinguicula vulgaris ssp. macroceras (6)
Pinnasa bergii (6)
Pinus albicaulis (150)
Pinus aristata (12)
Pinus arizonica (3)
Pinus arizonica var. arizonica (1)
Pinus arizonica var. cooperi (4)
Pinus armandii (4)
Pinus attenuata (67)
Pinus ayacahuite (7)
Pinus ayachuite (1)
Pinus balfouriana (41)
Pinus balfouriana ssp. austrina (38)
Pinus balfouriana ssp. balfouriana (17)
Pinus balouriana ssp. balfouriana (1)
Pinus banksiana (15)
Pinus brutia var. eldarica (5)
Pinus bungeana (27)
Pinus californiarum (3)
Pinus canariensis (46)
Pinus caribaea var. hondurensis (1)
Pinus cembra (5)
Pinus cembroides (8)
Pinus cembroides var. cembroides (4)
Pinus chihuahuana (3)
Pinus contorta (86)
Pinus contorta ssp. bolanderi (31)
Pinus contorta ssp. contorta (34)
Pinus contorta ssp. latifolia (5)
Pinus contorta ssp. murrayana (111)
Pinus contorta var. bolanderi (9)
Pinus contorta var. contorta (7)
Pinus contorta var. latifolia (9)
Pinus contorta var. murrayana (1)
Pinus cooperi (2)
Pinus coulteri (100)
Pinus densiflora (23)
Pinus discolor (11)
Pinus douglasiana (3)
Pinus durangensis (5)
Pinus edulis (67)
Pinus eldarica (2)
Pinus elliottii (1)
Pinus engelmannii (16)
Pinus flexilis (105)
Pinus glabra (2)
Pinus greggii (1)
Pinus halepensis (36)
Pinus hartwegii (2)
Pinus heldreichii (17)
Pinus herrerae (6)
Pinus jeffreyi (253)
Pinus johanis (6)
Pinus koraiensis (32)
Pinus kwangtungensis (2)
Pinus lambertiana (156)
Pinus leiophylla var. chihuahuana (9)
Pinus leiophylla var. leiophylla (3)
Pinus leucodermis (6)
Pinus longaeva (333)
Pinus luchuensis (5)
Pinus lumholtzii (6)
Pinus maximartinezii (5)
Pinus monophylla (179)
Pinus monophylla ssp. californiarum (1)
Pinus monophylla ssp. fallax (4)
Pinus monophylla var. californiarum (3)
Pinus monosperma (4)
Pinus monticola (109)
Pinus morrisonicola (9)
Pinus mugho (6)
Pinus mugo (29)
Pinus mugo ssp. uncinata (3)
Pinus mugo var. pumilio (9)
Pinus muricata (82)
Pinus nigra (17)
Pinus oocarpa (4)
Pinus orizabensis (5)
Pinus palustris (38)
Pinus parviflora (24)
Pinus patula (6)
Pinus pinaster (8)
Pinus pinea (30)
Pinus ponderosa (401)
Pinus ponderosa ssp. benthamiana (1)
Pinus ponderosa ssp. ponderosa (8)
Pinus ponderosa var. arizonica (5)
Pinus ponderosa var. benthamiana (1)
Pinus ponderosa var. pacifica (7)
Pinus ponderosa var. ponderosa (13)
Pinus ponderosa var. scopulorum (39)
Pinus ponderosa var. washoensis (8)
Pinus pseudostrobus (7)
Pinus pseudostrobus var. apulcensis (3)
Pinus pumila (3)
Pinus quadrifolia (32)
Pinus radiata (105)
Pinus reflexa (1)
Pinus resinosa (11)
Pinus rhaetica (2)
Pinus rigida (10)
Pinus roxburghii (5)
Pinus sabineana (47)
Pinus sabiniana (93)
Pinus schwerinii (2)
Pinus sp. (93)
Pinus strobiformis (7)
Pinus strobiformis ssp. veitchii (8)
Pinus strobus (58)
Pinus sylvestris (26)
Pinus sylvestris var. nevadensis (1)
Pinus sylvestris var. sylvestris (3)
Pinus taeda (13)
Pinus taiwanensis (9)
Pinus techunumanii (2)
Pinus thunbergii (25)
Pinus torreyana (46)
Pinus torreyana ssp. insularis (10)
Pinus torreyana ssp. torreyana (28)
Pinus virginiana (19)
Pinus wallichiana (27)
Pinus x digenea (2)
Pinus yecorensis (4)
Piper arboreum (12)
Piper auritum (11)
Piper excelsum (1)
Piper glabrescens (1)
Piper methysticum (1)
Piper nigrum (1)
Piper sanctum (1)
Piper sarmentosum (1)
Piperia candida (54)
Piperia colemanii (61)
Piperia cooperi (44)
Piperia elegans (28)
Piperia elegans ssp. decurtata (10)
Piperia elegans ssp. elegans (38)
Piperia elongata (79)
Piperia leptopetala (11)
Piperia michaelii (38)
Piperia transversa (117)
Piperia unalascensis (58)
Piperia yadonii (14)
Piptatheropsis exigua (7)
Piptatherum miliaceum (1)
Piptochaetium fimbriatum (2)
Pipturus albidus (5)
Piriqueta caroliniana (2)
Piscidia mollis (8)
Pisonia brunoniana (7)
Pisonia capitata (4)
Pisonia flavescens (2)
Pisonia tahitensis (3)
Pisonia umbellifera (6)
Pistacia atlantica (4)
Pistacia chinensis (43)
Pistacia lentiscus (20)
Pistacia mexicana (3)
Pistacia terebinthus (2)
Pistacia vera (18)
Pistia stratiotes (12)
Pistia stratoides (2)
Pisum sativum (18)
Pisum sativum ssp. elatius (7)
Pisum sativum ssp. eliatus (2)
Pisum sativum var. macrocarpon (2)
Pisum sativum var. saccharatum (1)
Pitcairnia caerulea (6)
Pitcairnia palmeri (1)
Pitcairnia stevensonii (4)
Pithecellobium dulce (16)
Pithecellobium keyense (1)
Pithecellobium unguis-cati (3)
Pithecelobium dulce (4)
Pithecoctenium cynanchoides (1)
Pittocaulon praecox (3)
Pittosporum brevicalyx (1)
Pittosporum crassifolium (24)
Pittosporum daphniphylloides (6)
Pittosporum erioloma (1)
Pittosporum eugenioides (20)
Pittosporum ferrugineum (1)
Pittosporum hosmeri (4)
Pittosporum illicoides (2)
Pittosporum nigricans (1)
Pittosporum phillyraeoides (8)
Pittosporum sp. (4)
Pittosporum taitense (1)
Pittosporum tenuifolium (34)
Pittosporum tobira (39)
Pittosporum umbellatum (1)
Pittosporum undulatum (27)
Pittosporum viridiflorum (10)
Pityopsis aspera var. adenolepis (3)
Pityopsis flexuosa (3)
Pityopsis graminifolia (1)
Pityopsis graminifolia var. aequifolia (3)
Pityopsis graminifolia var. graminifolia (3)
Pityopsis graminifolia var. latifolia (6)
Pityopsis oligantha (3)
Pityopus californicus (27)
Pityrogramma calomelanos (10)
Plagianthus regius (2)
Plagiobothrys acanthocarpus (30)
Plagiobothrys arizonicus (32)
Plagiobothrys austiniae (21)
Plagiobothrys bracteatus (28)
Plagiobothrys canescens (42)
Plagiobothrys canescens var. canescens (3)
Plagiobothrys canescens var. catalinensis (1)
Plagiobothrys chorisianus var. chorisianus (31)
Plagiobothrys chorisianus var. hickmanii (24)
Plagiobothrys chorisianus var. nickmanii (1)
Plagiobothrys cognatus (38)
Plagiobothrys collinus (1)
Plagiobothrys collinus var. californicus (4)
Plagiobothrys collinus var. fulvescens (11)
Plagiobothrys collinus var. gracilis (5)
Plagiobothrys cusickii (4)
Plagiobothrys diffusus (8)
Plagiobothrys distantiflorus (7)
Plagiobothrys figuratus (4)
Plagiobothrys figuratus ssp. corallicarpus (5)
Plagiobothrys fulvus (2)
Plagiobothrys fulvus var. campestris (6)
Plagiobothrys glaber (10)
Plagiobothrys glyptocarpus (4)
Plagiobothrys glyptocarpus var. glyptocarpus (8)
Plagiobothrys glyptocarpus var. modestus (2)
Plagiobothrys greenei (25)
Plagiobothrys hirtus (8)
Plagiobothrys hispidulus (17)
Plagiobothrys hispidus (35)
Plagiobothrys humistratus (34)
Plagiobothrys hystriculus (18)
Plagiobothrys infectivus (7)
Plagiobothrys jonesii (19)
Plagiobothrys kingii (4)
Plagiobothrys kingii var. harknessii (7)
Plagiobothrys kingii var. kingi (5)
Plagiobothrys leptocladus (18)
Plagiobothrys lithocaryus (5)
Plagiobothrys mollis (9)
Plagiobothrys mollis var. mollis (15)
Plagiobothrys nitens (8)
Plagiobothrys nothofulvus (129)
Plagiobothrys parishii (28)
Plagiobothrys reticulatus (2)
Plagiobothrys reticulatus var. reticulatus (7)
Plagiobothrys reticulatus var. rossianorum (10)
Plagiobothrys salsus (13)
Plagiobothrys scouleri (3)
Plagiobothrys scouleri var. penicillatus (3)
Plagiobothrys scriptus (18)
Plagiobothrys shastensis (17)
Plagiobothrys sp. (24)
Plagiobothrys sp. b (5)
Plagiobothrys stipitatus (8)
Plagiobothrys stipitatus var. micranthus (37)
Plagiobothrys stipitatus var. stipitatus (12)
Plagiobothrys strictus (7)
Plagiobothrys tenellus (40)
Plagiobothrys tener (4)
Plagiobothrys tener var. subglaber (7)
Plagiobothrys tener var. tener (13)
Plagiobothrys torreyi (16)
Plagiobothrys torreyi var. diffusus (5)
Plagiobothrys torreyi var. perplexans (15)
Plagiobothrys torreyi var. torreyi (6)
Plagiobothrys torreyi? (3)
Plagiobothrys trachycarpus (8)
Plagiobothrys uncinatus (15)
Plagiobothrys undulatus (21)
Plagiochelius tanacetoides (1)
Plagiochila porelloides (5)
Plagiogyria petelotii (1)
Plagiomnium cuspidatum (2)
Plagiomnium insigne (1)
Plagiomnium medium (4)
Plagiomnium venustum (1)
Plagiothecium cavifolium (6)
Plagiothecium denticulatum (2)
Plagiothecium laetum (1)
Plagiothecium piliferum (12)
Plagiothecium undulatum (2)
Plagirhegma dubia (12)
Planodes virginica (11)
Planodes virginicum (2)
Plantago afra (6)
Plantago altissima (4)
Plantago arenaria (3)
Plantago aristata (1)
Plantago asiatica (2)
Plantago coronopus (72)
Plantago elongata (22)
Plantago erecta (114)
Plantago eriopoda (4)
Plantago fernandezia (1)
Plantago hawaiensis (8)
Plantago helleri (3)
Plantago holosteum (4)
Plantago laceolata (1)
Plantago lagopus (6)
Plantago lanceolata (105)
Plantago lanceolata var. lanceolata (17)
Plantago laneolata (1)
Plantago linearis (2)
Plantago major (57)
Plantago maritima (86)
Plantago maritima juncoides (1)
Plantago maritima ssp. juncoides (1)
Plantago maritima var. juncoides (7)
Plantago media (13)
Plantago ovata (58)
Plantago ovata var. fastigiata (10)
Plantago ovata var. insularis (6)
Plantago patagonica (41)
Plantago psyllium (6)
Plantago purshii (1)
Plantago rhodosperma (19)
Plantago serraria (8)
Plantago sp. (5)
Plantago subnuda (41)
Plantago truncata ssp. firma (2)
Plantago virginica (7)
Planthera sp. (1)
Platanthera aquilonis (18)
Platanthera bifolia (35)
Platanthera bifolia ssp. bifolia (23)
Platanthera blephariglottis (15)
Platanthera blephariglottis var. blephariglottis (6)
Platanthera brevifolia (2)
Platanthera chlorantha (13)
Platanthera ciliaris (13)
Platanthera clavellata (15)
Platanthera cooperi (1)
Platanthera cristata (3)
Platanthera dilatata (34)
Platanthera dilatata var. albiflora (1)
Platanthera dilatata var. dilatata (14)
Platanthera dilatata var. leucostachys (194)
Platanthera dilitata (1)
Platanthera flava (8)
Platanthera grandiflora (12)
Platanthera hookeri (7)
Platanthera huronensis (17)
Platanthera hyperborea (3)
Platanthera hyperborea var. hyperborea (7)
Platanthera integra (10)
Platanthera lacera (25)
Platanthera leucophaea (11)
Platanthera leucostachys (11)
Platanthera obtusata ssp. obtusata (12)
Platanthera orbiculata (29)
Platanthera orbiculata var. macrophylla (2)
Platanthera peramoena (13)
Platanthera praeclara (1)
Platanthera psycodes (26)
Platanthera shriveri (4)
Platanthera sp. (2)
Platanthera sparsiflora (127)
Platanthera sparsiflora var. ensifolia (5)
Platanthera stricta (55)
Platanthera tescamnis (24)
Platanthera transversa (5)
Platanthera unalascensis (19)
Platanthera x bicolor (11)
Platanthera x estesii (8)
Platanthera x lassenii (6)
Platanthera x media (1)
Platanthera yosemitensis (34)
Platanus mexicana (4)
Platanus occidentalis (30)
Platanus orientalis (5)
Platanus orientalis var. insularis (3)
Platanus racemosa (146)
Platanus wrightii (17)
Platanus x acerifolia (15)
Platanus X hispanica (31)
Platanus xhispanica (5)
Plateilema palmeri (19)
Platicerium superbum (4)
Platoma abbottianum (14)
Platycerium bifurcatum (7)
Platycerium coronarium (1)
Platycerium sp. (1)
Platycerium superbum (2)
Platycladus orientalis (15)
Platycodon grandiflorum ssp. mariesii var. album (2)
Platycodon grandiflorus (18)
Platydesma spathulata (4)
Platylobium formosum (1)
Platylophus trifoliatus (9)
Platymiscium trifoliolatum (1)
Platyschkuhria integrifolia (9)
Platystemon californicum (1)
Platystemon californicus (297)
Plecostachys serphyllifolia (8)
Plecostachys serpyllifolia (13)
Plecrtranthus hybrid (2)
Plectocephalus americanus (14)
Plectocephalus rothrockii (8)
Plectranthus (1)
Plectranthus amboinicus (3)
Plectranthus argentatus (7)
Plectranthus australis (1)
Plectranthus barbatus (3)
Plectranthus barbatus var. grandis (7)
Plectranthus caninus (9)
Plectranthus chirindensis (4)
Plectranthus ciliatus (18)
Plectranthus coleoides (1)
Plectranthus cremnus (4)
Plectranthus ecklonii (2)
Plectranthus ernstii (5)
Plectranthus forsteri (2)
Plectranthus fosteri (1)
Plectranthus fruticosus (2)
Plectranthus lanuginosus (5)
Plectranthus montanus (3)
Plectranthus neochilus (9)
Plectranthus oertendahlii (4)
Plectranthus parviflorus (4)
Plectranthus saccatus (1)
Plectranthus scutellarioides (11)
Plectranthus sp. (12)
Plectranthus tomentosa (2)
Plectranthus verticillatus (1)
Plectranthus zuluensis (5)
Plectritis (1)
Plectritis brachystemon (4)
Plectritis ciliosa (56)
Plectritis cilosa (1)
Plectritis congesta (33)
Plectritis congesta ssp. brachystemon (30)
Plectritis congesta ssp. congesta (9)
Plectritis congestum ssp. brachystemon (1)
Plectritis macrocera (87)
Plectritis sp. (6)
Pleiacanthus spinosus (96)
Pleioblastus variegata (1)
Pleione aurita (1)
Pleione confusa (3)
Pleione el-pico ssp. goldcrest (1)
Pleione formosana (2)
Pleione formosana ssp. snow white (1)
Pleione forrestii (3)
Pleione iris (1)
Pleione limpritchii (2)
Pleione pinkepankii (1)
Pleione shantung (6)
Pleione shantung ssp. muriel harberd (1)
Pleione shantung ssp. ridgeway (2)
Pleione snow-bunting (1)
Pleione soufriere (2)
Pleione speciosa (2)
Pleione tolima (1)
Pleione tongariro (1)
Pleione versaille ssp. muriel turner (1)
Pleione vesuvius (1)
Pleiospilos bolusii (1)
Pleiospilos nelii (16)
Pleiospilos simulans (2)
Pleomele aurea (2)
Pleomele hawaiiensis (8)
Pleonosporium complanatum (1)
Pleopeltis angusta (2)
Pleopeltis appressa (1)
Pleopeltis guttata (2)
Pleopeltis lepidotricha (3)
Pleopeltis macrocarpa (2)
Pleopeltis polylepis (1)
Pleopeltis pyrrholepis (2)
Pleopeltis repanda (1)
Pleopeltis rosei (1)
Pleopeltis thyssanolepis (5)
Pleopeltis x melanoneuron (1)
Plesioneuron attenuatum (7)
Plesioneuron sp. (8)
Pleuraphis jamesii (3)
Pleuraphis mutica (2)
Pleuraphis rigida (8)
Pleuricospora fimbriolata (62)
Pleuridium (1)
Pleuridium acuminatum (4)
Pleuridium mexicanum (3)
Pleuridium subulatum (3)
Pleuridium subulatum/acuminatum (1)
Pleurocoronis pluriseta (69)
Pleurophora pungens (3)
Pleuropogon californicus (21)
Pleuropogon californicus var. californicus (15)
Pleuropogon californicus var. davyi (7)
Pleuropogon hooverianus (26)
Pleuropogon oregonus (2)
Pleuropogon refractus (41)
Pleurospermum austriacum (8)
Pleurostylia capensis (2)
Pleurothallis brighamii (2)
Pleurothallis chrysantha (1)
Pleurothallis endotrachys (2)
Pleurothallis erucosa (1)
Pleurothallis grobyi (1)
Pleurothallis hemirhoda (2)
Pleurothallis immersa (1)
Pleurothallis modestissima (1)
Pleurothallis niveoglobula (3)
Pleurothallis palliolata (1)
Pleurothallis picta (1)
Pleurothallis quadrifida (1)
Pleurothallis rubens (1)
Pleurothallis segoviensis (1)
Pleurothallis sp. (1)
Pleurothallis stenosepala (2)
Pleurothallis stricta (4)
Pleurothallis teagueii (1)
Pleurozium schreberi (4)
Plocamium cartilagineum (1)
Pluchea carolinensis (8)
Pluchea odorata (17)
Pluchea odorata var. odorata (54)
Pluchea rosea (1)
Pluchea sericea (91)
Plumbago auriculata (20)
Plumbago caerulea (4)
Plumbago capensis (5)
Plumbago europaea (8)
Plumbago scandens (1)
Plumbago sp. (1)
Plumbago zeylanica (1)
Plumeria acutifolia (2)
Plumeria obtusa (22)
Plumeria obtusa var. obtusa (1)
Plumeria pudica (10)
Plumeria rubra (29)
Plumeria rubra var. acuminata (1)
Plumeria sp. (1)
Plummeria rubra (1)
Pneumatopteris glandulifera (1)
Pneumatopteris mesocarpa (24)
Pneumatopteris pendens (3)
Pneumatopteris sandwicensis (7)
Poa alpina (2)
Poa alpina ssp. vivipara (2)
Poa annua (36)
Poa arnowiae (3)
Poa atropurpurea (24)
Poa bigelovii (14)
Poa bolanderi (10)
Poa bulbosa (47)
Poa bulbosa ssp. vivipara (6)
Poa compressa (4)
Poa confinis (4)
Poa cusickii (5)
Poa cusickii ssp. epilis (3)
Poa cusickii ssp. pallida (5)
Poa cusickii var. cusickii (1)
Poa douglasii (26)
Poa fendleriana (1)
Poa fendleriana ssp. longiligula (7)
Poa flabellata (7)
Poa glauca ssp. rupicola (10)

Poa howellii (6)
Poa infirma (7)
Poa keckii (1)
Poa kelloggii (8)
Poa laxiflora (3)
Poa leptocoma (5)
Poa leptocoma ssp. leptocoma (1)
Poa lettermanii (1)
Poa macrantha (33)
Poa napensis (8)
Poa palustris (2)
Poa piperi (9)
Poa pratensis (15)
Poa pratensis ssp. agassizensis (1)
Poa pringlei (2)
Poa scabrella (3)
Poa secunda (22)
Poa secunda ssp. juncifolia (3)
Poa secunda ssp. secunda (32)
Poa sierrae (57)
Poa stebbinsii (3)
Poa suksdorfii (1)
Poa trivialis (1)
Poa unilateralis (5)
Poa unilateralis ssp. unilateralis (12)
Poa wheeleri (7)
Podachaenium chiapanum (2)
Podachaenium eminens (2)
Podagrostis thurberiana (3)
Podalyria oleaefolia (1)
Podanthus mitiqui (2)
Podistera nevadensis (18)
Podocarpus chinensis (2)
Podocarpus coriaceus (1)
Podocarpus elongatus (3)
Podocarpus falcatus (30)
Podocarpus gracilior (9)
Podocarpus hallii (2)
Podocarpus henkelii (11)
Podocarpus laetus (2)
Podocarpus latifolius (31)
Podocarpus macrophylla (8)
Podocarpus macrophyllus (26)
Podocarpus matudae (2)
Podocarpus neriifolius (1)
Podocarpus salignus (3)
Podocarpus sp. (2)
Podocarpus totara (3)
Podocarpus totara var. aurea (1)
Podonosma orientalis (1)
Podophyllum hexandrum (5)
Podophyllum peltatum (44)
Podospermum roseum (7)
Podostemum ceratophyllum (1)
Podranea brycei (1)
Podranea ricasoliana (3)
Pogogyne abramsii (51)
Pogogyne clareana (11)
Pogogyne douglasii (52)
Pogogyne douglasii ssp. parviflora (1)
Pogogyne floribunda (23)
Pogogyne nudiuscula (13)
Pogogyne serpylloides (40)
Pogogyne zizyphoroides (27)
Pogonatum contortum (2)
Pogonia ophioglossoides (7)
Pohlia bolanderi (1)
Pohlia cruda (5)
Pohlia longibracteata (2)
Pohlia obtusifolia (1)
Pohlia robertsonii (1)
Pohlia tundrae (1)
Polanisia dedocandra (3)
Polanisia dodecandra ssp. dodecandra (9)
Polanisia dodecandra ssp. trachysperma (32)
Polanisia jamesii (3)
Polanisia unglandulosa (1)
Polaskia chende (2)
Polemonium acutiflorum (4)
Polemonium brandegeei (8)
Polemonium caeruleum (1)
Polemonium californicum (69)
Polemonium carneum (42)
Polemonium chartaceum (7)
Polemonium confertum (3)
Polemonium delicatum (1)
Polemonium eddyense (46)
Polemonium elegans (1)
Polemonium eximium (42)
Polemonium foliosissimum (8)
Polemonium foliosissimum var. alpinum (4)
Polemonium foliosissimum var. foliosissimum (4)
Polemonium glabrum (3)
Polemonium micranthum (17)
Polemonium occidentale (51)
Polemonium occidentale ssp. occidentale (19)
Polemonium pauciflorum (3)
Polemonium pulcherrimum (34)
Polemonium pulcherrimum ssp. delicatum (2)
Polemonium pulcherrimum ssp. pulcherrimum (12)
Polemonium pulcherrimum var. pilosum (9)
Polemonium pulcherrimum var. pulcherrimum (30)
Polemonium pulcherrimum var. shastense (31)
Polemonium reptans (11)
Polemonium reptans var. reptans (5)
Polemonium sp. (2)
Polemonium vanbruntiae (8)
Polemonium viscosum (33)
Polemonum eddyense (4)
Polianthes nelsonii (5)
Polianthes tuberosa (1)
Poliomintha glabrescens (7)
Poliomintha longiflora (5)
Poliothyrsis sinensis (2)
Polkystichum scopulinum (1)
Polyachyrus poeppigii (5)
Polybotrya speciosa (1)
Polycarpon depressum (13)
Polycarpon tetraphyllum (45)
Polycarpon tetraphyllum var. tetraphyllum (19)
Polyctenium fremontii (15)
Polyctenium fremontii var. fremontii (2)
Polyctenium williamsiae (7)
Polygala acanthoclada (33)
Polygala alba (43)
Polygala alpestris (6)
Polygala amarella (2)
Polygala amphothrix (5)
Polygala balduinii (3)
Polygala bracteolata (3)
Polygala calcarea (3)
Polygala californica (87)
Polygala chamaebuxus (8)
Polygala comosa (3)
Polygala cornuta (16)
Polygala cornuta var. cornuta (40)
Polygala cornuta var. fishiae (30)
Polygala cruciata (17)
Polygala dalmesiana (7)
Polygala garcinii (1)
Polygala glochidiata (5)
Polygala heterorhyncha (9)
Polygala intermontana (1)
Polygala lutea (9)
Polygala macradenia var. macradenia (10)
Polygala monspeliaca (3)
Polygala myrtifolia (12)
Polygala nana (1)
Polygala nicaeensis ssp. forojulensis (3)
Polygala paniculata (1)
Polygala paucifolia (10)
Polygala polygama (11)
Polygala rugelii (4)
Polygala rusbyi (6)
Polygala sanguinea (18)
Polygala scoparioides (14)
Polygala senega (6)
Polygala sinaloae (4)
Polygala subspinosa (17)
Polygala verticillata (1)
Polygala virgata (4)
Polygala vulgaris (1)
Polygala x dalmaisiana (2)
Polygonatum biflorum (15)
Polygonatum multiflorum (9)
Polygonatum odoratum (15)
Polygonatum pubescens (21)
Polygonatum verticillatum (6)
Polygonella articulata (20)
Polygonum amphibium (9)
Polygonum amphibium var. stipulaceum (1)
Polygonum arenastrum (8)
Polygonum argyrocoleon (15)
Polygonum aviculare (37)
Polygonum aviculare ssp. aviculare (2)
Polygonum aviculare ssp. depressum (42)
Polygonum aviculare ssp. rurivagum (1)
Polygonum bidwelliae (37)
Polygonum bistoroides (1)
Polygonum bistorta (13)
Polygonum bistortoides (11)
Polygonum bolanderi (36)
Polygonum californicum (23)
Polygonum cilinode (8)
Polygonum coccineum (1)
Polygonum convolvulus (4)
Polygonum convolvulus var. convolvulus (2)
Polygonum cuspidatum (10)
Polygonum davisiae (16)
Polygonum douglasii (37)
Polygonum douglasii ssp. douglasii (2)
Polygonum douglasii ssp. johnstonii (2)
Polygonum fowleri (4)
Polygonum hickmanii (15)
Polygonum hydropiper (5)
Polygonum hydropiperoides (8)
Polygonum lapathifolium (16)
Polygonum majus (9)
Polygonum marinense (4)
Polygonum minimum (25)
Polygonum mite (6)
Polygonum multiflorum (5)
Polygonum newberryi (5)
Polygonum orientale (8)
Polygonum oxyspermum (2)
Polygonum paronychia (97)
Polygonum parryi (12)
Polygonum patulum (7)
Polygonum pensylvanicum (2)
Polygonum persicaria (3)
Polygonum phytolaccifolium (4)
Polygonum polygaloides (18)
Polygonum polygaloides ssp. confertiflorum (12)
Polygonum polygaloides ssp. esotericum (3)
Polygonum polygaloides ssp. kelloggii (20)
Polygonum ramosisimum (2)
Polygonum ramosissimum (18)
Polygonum sagittatum (3)
Polygonum sawatchense ssp. oblivium (9)
Polygonum shastense (87)
Polygonum sp. (8)
Polygonum spergulariiforme (9)
Polygonum viviparum (6)
Polylepis australis (6)
Polylepis incana (1)
Polylepis sp. (4)
Polymnia canadensis (36)
Polymnia maculata (3)
Polymnia sonchifolia (8)
Polyphlebium borbonicum (14)
Polyphlebium endlicherianum (25)
Polypodium alan-smithii (1)
Polypodium alavae (1)
Polypodium amorphum (1)
Polypodium appressum (1)
Polypodium argentinum (1)
Polypodium australe (2)
Polypodium blepharideum (1)
Polypodium californicum (57)
Polypodium calirhiza (35)
Polypodium cambricum (4)
Polypodium clemensiae (1)
Polypodium colpodes (2)
Polypodium concolorum (1)
Polypodium glycyrrhiza (46)
Polypodium guttatum (2)
Polypodium hesperium (15)
Polypodium hirtelloides (1)
Polypodium interjectum (2)
Polypodium leptotrichum (2)
Polypodium mexiae (1)
Polypodium parksii (1)
Polypodium pellucidum var. vulcanicum (5)
Polypodium pyrrholepis (5)
Polypodium rosei (2)
Polypodium saxicola (1)
Polypodium scouleri (41)
Polypodium sp. (3)
Polypodium vacillans (1)
Polypodium virginianum (28)
Polypodium vulgare (9)
Polypogon australis (3)
Polypogon imberbis (4)
Polypogon interruptus (12)
Polypogon maritimus (6)
Polypogon monspeliensis (95)
Polypogon monspleliensis (1)
Polypogon viridis (15)
Polyscias cumingiana (2)
Polyscias flynnii (9)
Polyscias fruticosa (1)
Polyscias guilfoylei (1)
Polyscias racemosa (15)
Polyscias scutellaria (1)
Polyscias verrucosa (2)
Polysiphonia bifurcata (1)
Polysiphonia scopulorum (10)
Polysiphonia sp. (probably p. pacifica) (1)
Polystachya affinis (2)
Polystachya maculata (2)
Polystachya pubescens (4)
Polystachya sp. (1)
Polystachya valentina (1)
Polystachya vulcanica (1)
Polystichum acrostichoides (13)
Polystichum aculeatum (21)
Polystichum andersonii (4)
Polystichum braunii (9)
Polystichum californicum (21)
Polystichum dudleyi (15)
Polystichum imbricans (7)
Polystichum imbricans ssp. curtum (9)
Polystichum imbricans ssp. imbricans (34)
Polystichum kruckebergii (16)
Polystichum lemmonii (30)
Polystichum lonchitis (24)
Polystichum mexiae (1)
Polystichum munitum (107)
Polystichum pilosum (1)
Polystichum polyblepharum (5)
Polystichum proliferum (3)
Polystichum pygmaeum (1)
Polystichum scopulinum (19)
Polystichum setiferum (4)
Polystichum sp. (4)
Polystichum transvaalense (1)
Polystichum xiphophyllum (3)
Polytrias indicum (2)
Polytrichum commune (7)
Polytrichum formosum (6)
Polytrichum juniperinum (19)
Polytrichum juniperinum var. gracilius (8)
Polytrichum piliferum (3)
Polytrichum sp. (14)
Pomaria melanostricta (1)
Pombalia attenuatus (6)
Pombalia verticillatus (11)
Pomeria canescens (4)
Pometia pinnata (1)
Poncirus trifoliata (4)
Pontederia cordata (43)
Pontederia parviflora (1)
Pontederia sp. (1)
Ponthieva racemosa (3)
Popogyne douglasii (1)
Populus acuminata (1)
Populus alba (47)
Populus angustifolia (72)
Populus balsamifera (18)
Populus brandegeei (2)
Populus deltoides (7)
Populus deltoides ssp. monilifera (6)
Populus fremontii (45)
Populus fremontii ssp. fremontii (113)
Populus fremontii ssp. mesetae (4)
Populus grandidentata (28)
Populus nigra (3)
Populus sargentii (6)
Populus simonii (2)
Populus songarica (3)
Populus sp. (18)
Populus tremula (14)
Populus tremuloides (391)
Populus trichocarpa (157)
Populus x canadensis (2)
Populus x canescens (2)
Populus x hinckleyana (5)
Porella bolanderi (19)
Porella cordaeana (2)
Porella navicularis (6)
Porella platyphyilla (17)
Porella roellii (2)
Porella sp. (3)
Porliera chilensis (5)
Porlieria microphylla (1)
Porophyllum gracile (98)
Porophyllum pausodynum (7)
Porophyllum pinifolium (4)
Porophyllum ruderale (9)
Porophyllum ruderale var. macrocephalum (4)
Porophyllum scoparium (6)
Porotrichum bigelovii (3)
Porphyra nereocystis (1)
Porphyra perforata (1)
Porphyrostachys pilifera (4)
Porroglossum meridionale (1)
Porroglossum muscosum (1)
Portea petropolitana var. extensa (1)
Porteranthus trifoliatus (2)
Porterella carnosula (51)
Portulaca grandiflora (21)
Portulaca halimoides (50)
Portulaca molokinensis (3)
Portulaca oleracea (70)
Portulaca oleracea 'Giganthes' (1)
Portulaca oleracea 'Giganthes' (white) (1)
Portulaca oleracea ssp. impolita (11)
Portulaca pilosa (18)
Portulaca sclerocarpa (8)
Portulaca suffrutescens (9)
Portulaca umbraticola (6)
Portulacaria afra (11)
Postelsia palmaeformis (46)
Potamogeton alpinus (5)
Potamogeton amplifolius (3)
Potamogeton berchtoldii (7)
Potamogeton crispus (14)
Potamogeton diversifolius (13)
Potamogeton epihydrus (11)
Potamogeton foliosus ssp. foliosus (9)
Potamogeton gramineus (10)
Potamogeton illinoensis (1)
Potamogeton natans (24)
Potamogeton nodosus (10)
Potamogeton praelongus (12)
Potamogeton pusillus (6)
Potamogeton robbinsii (3)
Potamogeton sp. (6)
Potentilla alba (3)
Potentilla albiflora (2)
Potentilla anglica (2)
Potentilla anserina (41)
Potentilla anserina ssp. anserina (15)
Potentilla anserina ssp. pacifica (81)
Potentilla argentea (11)
Potentilla arguta (1)
Potentilla atrosanguinea (4)
Potentilla aurea (8)
Potentilla basaltica (8)
Potentilla berryi (4)
Potentilla biennis (22)
Potentilla breweri (54)
Potentilla bruceae (5)
Potentilla carniolica (22)
Potentilla caulescens (6)
Potentilla cinerea (4)
Potentilla clusiana (8)
Potentilla concinna var. proxima (5)
Potentilla cottamii (1)
Potentilla crantzii (4)
Potentilla cristae (18)
Potentilla discolor (2)
Potentilla diversifolia var. diversifolia (8)
Potentilla drummondii (24)
Potentilla drummondii ssp. breweri (8)
Potentilla drummondii ssp. bruceae (2)
Potentilla drummondii ssp. drummondii (3)
Potentilla effusa (2)
Potentilla egedii (2)
Potentilla emarginata (1)
Potentilla erecta (5)
Potentilla fissa (1)
Potentilla flabellifolia (57)
Potentilla floribunda (2)
Potentilla fruticosa (18)
Potentilla furcata (1)
Potentilla glandulosa (6)
Potentilla glandulosa ssp. ashlandica (7)
Potentilla glandulosa ssp. glandulosa (3)
Potentilla glandulosa ssp. hansenii (3)
Potentilla glandulosa ssp. nevadensis (2)
Potentilla glandulosa ssp. pseudorupestris (9)
Potentilla glandulosa ssp. reflexa (2)
Potentilla glaucophila var. glaucophila (4)
Potentilla glaucophylla (2)
Potentilla glaucophylla var. glaucophylla (12)
Potentilla gracilis (59)
Potentilla gracilis var. brunnescens (3)
Potentilla gracilis var. elmeri (27)
Potentilla gracilis var. fastigiata (73)
Potentilla gracilis var. flabelliformis (10)
Potentilla gracilis var. gracilis (11)
Potentilla grayi (4)
Potentilla griffithii (2)
Potentilla heptaphylla (4)
Potentilla hickmanii (26)
Potentilla hippiana (16)
Potentilla holmgrenii (1)
Potentilla hybrid (2)
Potentilla hyparctica (4)
Potentilla jepsonii (16)
Potentilla lineata (4)
Potentilla luteosericea (4)
Potentilla micrantha (10)
Potentilla millefolia (27)
Potentilla millefolia var. klamathensis (3)
Potentilla modesta (1)
Potentilla morefieldii (17)
Potentilla newberryi (6)
Potentilla nitida (12)
Potentilla nivea (7)
Potentilla nivea ssp. fallax (1)
Potentilla norrelmukana (4)
Potentilla norvegica (30)
Potentilla ovina (2)
Potentilla palustris (7)
Potentilla pectinisecta (4)
Potentilla pensylvanica (10)
Potentilla pensylvanica var. strigosa (1)
Potentilla pseudosericea (17)
Potentilla pulchella (1)
Potentilla pulcherrima (6)
Potentilla pusilla (14)
Potentilla recta (21)
Potentilla reptans (24)
Potentilla rimicola (24)
Potentilla rimicola var. rimicola (1)
Potentilla rivalis (8)
Potentilla rupestris (3)
Potentilla simplex (3)
Potentilla sp. (5)
Potentilla sterilis (6)
Potentilla subviscosa (13)
Potentilla supina (1)
Potentilla thurberi (8)
Potentilla tommasiniana (6)
Potentilla uniflora (4)
Potentilla wheeleri (6)
Potentilla zimmeteri (5)
Potentillla millefolia (1)
Potentiulla glandulosa (1)
Poteridium annuum (31)
Poteridium occidentale (6)
Poterium sanguisorba (27)
Pothos longipes (2)
Pouteria caimito (3)
Pouteria campechiana (3)
Pouteria grayana (8)
Pouteria lucuma (1)
Pouteria sapota (4)
Pouteria sapote (2)
Pouteria viridis (2)
Pouzolzia mixta (4)
Prasium majus (7)
Pratia angulata (3)
Pratia pedunculata (2)
Pratia repens (1)
Praxelis clematidea (5)
Predaea laciniosa (39)
Preissia quadrata (23)
Premna serratifolia (2)
Prenanthella exigua (19)
Prenanthes alata (2)
Prenanthes alba (22)
Prenanthes altissima (8)
Prenanthes racemosa (21)
Prenanthes trifoliata (5)
Prenia tetragona (2)
Prepodesma orpenii (1)
Prestoea acuminata (1)
Prestoea acuminata var. montana (3)
Priacma serrata (2)
Primula acaulis (24)
Primula albenensis (1)
Primula allionii ssp. agnes (2)
Primula allionii ssp. grandiflora (1)
Primula alpina (8)
Primula amethystina (1)
Primula angustifolia (15)
Primula aureata (1)
Primula aureata ssp. netta dennis (2)
Primula auricula (36)
Primula auricula var. braunii (1)
Primula bhutanica (1)
Primula boothii (1)
Primula boothii ssp. alba (1)
Primula boothii ssp. stolonifera (1)
Primula bracteata ssp. ace 1671 (1)
Primula capillaris (3)
Primula capitata ssp. mooreana (4)
Primula carniolica (14)
Primula clevelandii (53)
Primula clevelandii ssp. patulum (5)
Primula clevelandii var. clevelandii (38)
Primula clevelandii var. gracilis (14)
Primula clevelandii var. iinsularis (3)
Primula clevelandii var. insularis (17)
Primula clevelandii var. patula (80)
Primula columnea (7)
Primula conjugens (4)
Primula conjugens var. conjugens (1)
Primula conjugens var. viscida (2)
Primula darialica (1)
Primula denticulata (5)
Primula drummondiana (3)
Primula dryadifolia ssp. congestifolia (1)
Primula edgeworthii ssp. alba (1)
Primula egaliksensis (3)
Primula elatior (20)
Primula elatior ssp. intricata (2)
Primula eximia (2)
Primula farinosa (20)
Primula forbesii (2)
Primula fragrans (69)
Primula gaubeana (1)
Primula gracilipes (1)
Primula halleri (13)
Primula hendersonii (208)
Primula hirsuta (1)
Primula integrifolia (6)
Primula jeffreyi (110)
Primula kisoana ssp. alba (1)
Primula kitaibeliana (12)
Primula latiloba (3)
Primula laurentiana (1)
Primula lismore ssp. pink ice (1)
Primula lismore-yellow (2)
Primula macrocalyx (1)
Primula malacoides (1)
Primula marginata (1)
Primula marginata ssp. linda pope (2)
Primula marginata ssp. white linda pope (3)
Primula maximowiczii (1)
Primula meadia (11)
Primula minima (11)
Primula minkwitziae (1)
Primula mistassinica (18)
Primula nutans (1)
Primula obconica (4)
Primula parryi (25)
Primula patens (40)
Primula pauciflora (43)
Primula pauciflora var. pauciflora (17)
Primula pauciflora var. pulchella (4)
Primula pauciflora var. pulchellum (1)
Primula poissonii (3)
Primula polyantha (5)
Primula polyanthus (1)
Primula primulina (1)
Primula pulchellum (2)
Primula pulchra (1)
Primula redolens (1)
Primula reinei ssp. kitakadensis (1)
Primula renifolia (1)
Primula rusbyi (7)
Primula scotica (2)
Primula sonchifolia (2)
Primula sp. (19)
Primula subalpina (4)
Primula suffrutescens (95)
Primula tetrandra (79)
Primula tschuktschorum (1)
Primula veris (27)
Primula veris ssp. veris (1)
Primula villosa (10)
Primula voronovi (1)
Primula vulgaris (20)
Primula wulfeniana (12)
Primula x polyantha (23)
Primula x pubescens (1)
Primula x venusta (10)
Primula x-polyantha (4)
Prionitis albemarlensis (1)
Prionitis galapagensis (1)
Prionitis hancockii (1)
Prionitis lanceolata (2)
Prionitis linearis (1)
Prionium serratum (1)
Prionosciadium townsendii (2)
Pritchardia affinis (10)
Pritchardia beccariana (5)
Pritchardia flynnii (2)
Pritchardia gordonii (1)
Pritchardia limahuliensis (2)
Pritchardia minor (4)
Pritchardia napaliensis (4)
Pritchardia pacifica (2)
Pritchardia remota (10)
Pritchardia schattaueri (2)
Pritchardia thurstonii (1)
Pritzelago alpina (10)
Priva mexicana (11)
Proboscidea althaeifolia (148)
Proboscidea fragrans (1)
Proboscidea gracillima (1)
Proboscidea louisianica (19)
Proboscidea louisianica ssp louisianica (1)
Proboscidea louisianica ssp. louisianica (33)
Proboscidea lutea (51)
Proboscidea parviflora (17)
Proboscidea parviflora ssp parviflora (2)
Proboscidea parviflora ssp. parviflora (1)
Proboscidea sabulosa (4)
Proboscidea sp. (2)
Proboscidea triloba ssp. diversifolia (1)
Proboscidia althaeifolia (5)
Procris pedunculata var. Pedunculata (3)
Proiphys amboinensis (1)
Promenea meadowgold (2)
Pronephrium simplex (2)
Prosaptia contigua (6)
Prosaptia pubipes (1)
Prosaptia rosenstockii (1)
Prosaptia subnuda (20)
Prosartes disporum (1)
Prosartes hookeri (93)
Prosartes hookeri var. oregana (1)
Prosartes lanuginosa (2)
Prosartes parvifolia (6)
Prosartes smithii (67)
Prosartes trachycarpa (6)
Prosopis alba (6)
Prosopis articulata (2)
Prosopis chilensis (5)
Prosopis denudans (14)
Prosopis glandulosa (15)
Prosopis glandulosa var. glandulosa (7)
Prosopis glandulosa var. torreyana (71)
Prosopis juliflora (8)
Prosopis juliflora var. glandulosa (3)
Prosopis laevigata (12)
Prosopis pallida (15)
Prosopis palmeri (6)
Prosopis pubescens (38)
Prosopis reptans var. cinerascens (11)
Prosopis sp. (5)
Prosopis strombulifera (1)
Prosopis velutina (24)
Prospero autumnale (5)
Prospero elisae (5)
Prostanthera ovalifolia (1)
Prostechea cochleata (2)
Prosthechea cochleata (8)
Prosthechea grammatoglossa (4)
Prosthechea hartwegii (3)
Protea amplexicaulis (3)
Protea caffra (1)
Protea cynaroides (16)
Protea eximia (3)
Protea gaguedi (1)
Protea longifolia (1)
Protea magnifica (1)
Protea nana (1)
Protea neriifolia (12)
Protea obtusifolia (3)
Protea repens (4)
Protea roupelliae (28)
Protea roupelliae ssp. roupelliae (5)
Protea scabra (2)
Protea scolymocephala (2)
Protea sp. (5)
Protea species (5)
Protea speciosa (2)
Protea welwitschii (4)
Protium sp. (19)
Proustia pyrifolia (2)
Prumnopitys andina (3)
Prunella grandiflora (10)
Prunella laciniata (6)
Prunella modularis (2)
Prunella vulgaris (90)
Prunella vulgaris ssp. lanceolata (16)
Prunella vulgaris var. lanceolata (60)
Prunella vulgaris var. vulgaris (7)
Prunus africana (13)
Prunus americana (8)
Prunus andersonii (101)
Prunus angustifolia (4)
Prunus armeniaca (28)
Prunus avium (33)
Prunus blireana (1)
Prunus brachybotrya (8)
Prunus campanulata (3)
Prunus caroliniana (7)
Prunus cerasifera (64)
Prunus cerasifera var. (8)
Prunus cerasifera var. pissardii (1)
Prunus cerasoides (4)
Prunus cerasoides var. campanulata (4)
Prunus cerasus (3)
Prunus cistena (4)
Prunus domestica (18)
Prunus dulcis (31)
Prunus dulcis var. dulcis (1)
Prunus emarginata (117)
Prunus eremophila (15)
Prunus fasciculata (33)
Prunus fasciculata var. fasciculata (25)
Prunus fasciculata var. punctata (9)
Prunus fremontii (66)
Prunus gentryi (5)
Prunus havardii (2)
Prunus hintonii (1)
Prunus hybrid (2)
Prunus ilicifolia (63)
Prunus ilicifolia ssp. ilicifolia (39)
Prunus ilicifolia ssp. lyonii (9)
Prunus incisa (2)
Prunus laurocerasus (31)
Prunus laurocerasus var. zambeliana (7)
Prunus lusitanica (13)
Prunus lusitanica var. azorica (4)
Prunus mahaleb (6)
Prunus mandshurica (1)
Prunus maritima (2)
Prunus minutiflora (1)
Prunus mume (3)
Prunus mume var. mume (2)
Prunus nipponica (2)
Prunus padus (2)
Prunus pensylvanica (14)
Prunus persica (14)
Prunus persica var. (4)
Prunus persica var. nucipersica (1)
Prunus persica var. platycarpa (2)
Prunus pumila var. depressa (7)
Prunus salicina (31)
Prunus salicina x (1)
Prunus sargentii (3)
Prunus serotina (27)
Prunus serotina var. serotina (6)
Prunus serotina var. virens (3)
Prunus serrula (7)
Prunus serrulata (43)
Prunus serrulata var. pendula (1)
Prunus sp. (6)
Prunus speciosa (6)
Prunus spinosa (15)
Prunus subcordata (27)
Prunus subhirtella (12)
Prunus takasaga-montana (1)
Prunus takasago-montana (1)
Prunus takesimensis (4)
Prunus tenella (4)
Prunus tomentosa (12)
Prunus transarisanensis (3)
Prunus triloba (8)
Prunus virginiana (58)
Prunus virginiana var. demissa (64)
Prunus virginiana var. melanocarpa (18)
Prunus virginiana var. melanocarpus (1)
Prunus virginiana var. virginiana (8)
Prunus x blireana (10)
Prunus x cistena (2)
Prunus x yedoensis (10)
Prunus yedoensis (7)
Psacalium decompositum (9)
Psammisia guianensis (2)
Psammisia ramiflora (2)
Psathyrotes annua (40)
Psathyrotes pilifera (6)
Psathyrotes ramosissim (3)
Psathyrotes ramosissima (121)
Psathyrotes sp. (1)
Psathyrotopsis scaposa (14)
Pseudalbizia sinaloensis (5)
Pseudananas sagenarius (1)
Pseudelephantopus spicatus (7)
Pseudephebe pubescens (1)
Pseuderanthemum carruthersii (5)
Pseuderanthemum carruthersii var. atropurpureum (1)
Pseuderanthemum carruthersii var. carruthersii (1)
Pseudobahia bahiifolia (18)
Pseudobahia heermannii (42)
Pseudobahia hermannii (1)
Pseudobahia peirsonii (75)
Pseudobahia piersonii (5)
Pseudobombax ellipticum (16)
Pseudobraunia californica (1)
Pseudocalliergon trifarium (1)
Pseudoclappia arenaria (11)
Pseudocydonia sinensis (1)
Pseudocymopterus montanus (7)
Pseudofumaria alba (7)
Pseudognaphalium beneolens (30)
Pseudognaphalium biolettii (35)
Pseudognaphalium californicum (110)
Pseudognaphalium californicum x stramineum (6)
Pseudognaphalium canescens (26)
Pseudognaphalium jaliscense (2)
Pseudognaphalium leucocephalum (17)
Pseudognaphalium luteoalbum (57)
Pseudognaphalium macounii (10)
Pseudognaphalium microcephalum (12)
Pseudognaphalium obtusifolium (21)
Pseudognaphalium ramosissimum (69)
Pseudognaphalium sp. (3)
Pseudognaphalium stramineum (101)
Pseudognaphalium thermale (18)
Pseudognaphalium viscosum (2)
Pseudogynoxys chenopodioides (3)
Pseudolachnostylis maprouneifolia (14)
Pseudolaingia hancockii (1)
Pseudolarix amabilis (5)
Pseudoleskeella serpentinensis (10)
Pseudolithos cubiformis (1)
Pseudolithos dodsonianus (1)
Pseudolithos migiurtinus (5)
Pseudolobivia kratochviliana (2)
Pseudolysimachion barrelieri ssp. barrelieri (6)
Pseudonoseris glandulosa (11)
Pseudopanax arboreus (1)
Pseudopanax crassifolium (2)
Pseudopanax crassifolius (1)
Pseudopanax laetum (1)
Pseudopanax lessonii (2)
Pseudophegopteris keraudreniana (6)
Pseudorchis albida (17)
Pseudorchis albida ssp. albida (9)
Pseudoroegneria spicata (10)
Pseudoroegneria spicata ssp. spicata (4)
Pseudorontium cyathiferum (61)
Pseudostellaria jamesiana (53)
Pseudostellaria sierrae (25)
Pseudotrillium rivale (12)
Pseudotsuga macrocarpa (60)
Pseudotsuga menziesii (80)
Pseudotsuga menziesii ssp. glauca (1)
Pseudotsuga menziesii var. glauca (91)
Pseudotsuga menziesii var. menziesii (81)
Pseudotsuga sinensis var. sinensis (2)
Pseudotsuga wilsoniana (6)
Psidium cattleianum (10)
Psidium guajava (15)
Psidium guava (1)
Psidium guineense (1)
Psidium littorale (2)
Psilactis asteroides (6)
Psilactis gentryi (9)
Psilactis tenuis (3)
Psilocarphus brevissimus (22)
Psilocarphus brevissimus var brevissimus (3)
Psilocarphus brevissimus var. brevissimus (94)
Psilocarphus chilensis (11)
Psilocarphus elatior (1)
Psilocarphus oregonus (14)
Psilocarphus sp. (1)
Psilocarphus tenellus (65)
Psilocarphus tenellus var. tenellus (1)
Psilocaulon junceum (1)
Psilocaulon subnodosum (6)
Psilostrophe cooperi (99)
Psilostrophe gnaphalodes (8)
Psilostrophe sparsiflora (9)
Psilostrophe tagetina (9)
Psilostrophe tagetina var. cerifera (20)
Psilotum complanatum (21)
Psilotum nudum (14)
Psittacanthus calyculatus (1)
Psittacanthus sonorae (19)
Psoralea aculeata (1)
Psoralea bituminosa (8)
Psoralea lanceolatum (2)
Psoralea macrostachya (1)
Psoralea pinnata (9)
Psoralidium lanceolatum (5)
Psorothamnus arborescens (26)
Psorothamnus arborescens var. arborescens (41)
Psorothamnus arborescens var. minutifolius (72)
Psorothamnus arborescens var. simplicifolius (6)
Psorothamnus emoryi (88)
Psorothamnus fremontii (27)
Psorothamnus fremontii var. attenuatus (6)
Psorothamnus fremontii var. fremontii (29)
Psorothamnus polydenius (70)
Psorothamnus schottii (119)
Psorothamnus scoparius (23)
Psorothamnus sp. (1)
Psorothamnus spinosus (124)
Psychilis bifida (7)
Psychopsis papilio (1)
Psychotria costivenia ssp. altorum (1)
Psychotria hawaiiensis var. hillebrandii (7)
Psychotria ligustrifolia (1)
Psychotria mapourioides (12)
Psychotria nervosa (2)
Psychotria rosea (19)
Psychropila leptosepala (7)
Psydrax livida (3)
Psydrax obovata ssp. obovata (1)
Psydrax odorata (2)
Psydrax odoratum (7)
Psygmorchis pusilla (1)
Ptaeroxylon obliquum (3)
Ptelea crenulata (58)
Ptelea trifoliata (14)
Pteleopsis myrtifolia (3)
Pterideridea parishii (1)
Pteridium aquilinum (52)
Pteridium aquilinum var. decompositum (3)
Pteridium aquilinum var. latiusculum (1)
Pteridium aquilinum var. pubescens (50)
Pteridium esculentum (1)
Pterigynandrum filiforme (12)
Pteris boliviensis (1)
Pteris cretica (15)
Pteris dactylina (1)
Pteris dentata (1)
Pteris ensifolrmis (3)
Pteris ensiformis 'Victoriae' (1)
Pteris ensiformis victoriae (6)
Pteris incompleta (1)
Pteris krameri (1)
Pteris lellingeri (1)
Pteris mertensioides (3)
Pteris nuda (1)
Pteris quadriaurita (3)
Pteris sp. (2)
Pteris tripartita (6)
Pteris venezuelensis (1)
Pteris vittata (3)
Pteris websteri (1)
Pterocactus valentinii (2)
Pterocarpus angolensis (18)
Pterocarpus officinalis (3)
Pterocarpus rotundifolius (23)
Pterocarya sp. (1)
Pterocarya stenoptera (5)
Pterocaulon pycnostachyum (8)
Pterocelastrus echinatus (7)
Pterocelastrus tricuspidatus (5)
Pterocladiella capillacea (1)
Pterogonium gracile (4)
Pterogonum alatum (2)
Pteronia divaricata (1)
Pterosiphonia paucicorticata (1)
Pterospermum elongatum (7)
Pterospora andromedea (191)
Pterostegia drymarioides (102)
Pterostylis banksii (5)
Pterostylis recurva (3)
Pterostyrax hispida (5)
Pterostyrax psilophylla (4)
Pterostyrax psilophyllus (2)
Pterygophora californica (7)
Pteryxia terebinthina var. terebinthina (1)
Ptilidium californicum (21)
Ptilium crista-castrensis (2)
Ptilotus exaltatus (10)
Ptilotus polystachyus (3)
Ptisana salicina (12)
Ptychomitrium gardneri (3)
Ptychosperma elegans (1)
Ptychostimum alpinum (2)
Ptychostomum pacificum (8)
Puccinellia distans (7)
Puccinellia howellii (10)
Puccinellia lemmonii (5)
Puccinellia nutkaensis (2)
Puccinellia nuttalliana (10)
Puccinellia simplex (19)
Pueraria lobata (12)
Pueraria montana (4)
Pueraria phaseoloides (1)
Pulicaria dysenterica ssp. uliginosa (8)
Pulicaria odora (4)
Pulicaria paludosa (26)
Pulmonaria australis (10)
Pulmonaria obscura (1)
Pulmonaria officinalis (6)
Pulmonaria saccharata (1)
Pulmonaria sp. (6)
Pulsatilla alba (5)
Pulsatilla albana ssp. armena (1)
Pulsatilla albana var. flavescens (2)
Pulsatilla alpina (6)
Pulsatilla alpina ssp. alpina (3)
Pulsatilla cernua (13)
Pulsatilla montana (11)
Pulsatilla multiceps (3)
Pulsatilla occidentalis (24)
Pulsatilla patens (8)
Pulsatilla patens ssp. multifida (8)
Pulsatilla rubra (24)
Pulsatilla slavica (1)
Pulsatilla vernalis (5)
Pulsatilla vulgaris (33)
Pulsatilla vulgaris ssp. grandis (1)
Pulsatilla x ochroleuca (1)
Pultenaea juniperina (1)
Pultenaea stipularis (3)
Punica granatum (58)
Punica granatum var. nana (4)
Purshia glandulosa (1)
Purshia mexicana (10)
Purshia mexicana var. stansburyana (18)
Purshia stansburiana (16)
Purshia stansburyana (81)
Purshia subintegra (4)
Purshia tridentata (82)
Purshia tridentata var. glandulosa (49)
Purshia tridentata var. tridentata (44)
Puya alpestris (11)
Puya alpestris ssp. zoellneri (8)
Puya berteroana (5)
Puya berteroniana (5)
Puya boliviensis (1)
Puya chilensis (16)
Puya clava-herculis (9)
Puya coerulea (1)
Puya coerulea var. coerulea (2)
Puya coerulea var. violacea (6)
Puya laxa (1)
Puya raimondii (2)
Puya sp. (2)
Puya spathacea (1)
Puya venusta (18)
Pycnanthemum californicum (20)
Pycnanthemum tenuifolium (9)
Pycnanthemum virginianum (17)
Pycnophyllum bryoides (13)
Pycreus polystachyos (2)
Pygmaeocereus bieblii (4)
Pygmaeocereus bylesianus (4)
Pyracantha angustifolia (8)
Pyracantha coccinea (18)
Pyracantha crenatiserrata (1)
Pyracantha crenulata (3)
Pyracantha fortuneana (6)
Pyracantha koidzumii (9)
Pyracantha sp. (18)
Pyrethropsis hosmariense (1)
Pyrethrum leontopodium (4)
Pyrola aphylla (42)
Pyrola asarifolia (37)
Pyrola asarifolia ssp. asarifolia (60)
Pyrola asarifolia ssp. bracteata (1)
Pyrola chlorantha (10)
Pyrola dentata (62)
Pyrola elliptica (22)
Pyrola grandiflora (3)
Pyrola minor (31)
Pyrola picta (108)
Pyrola rotundifolia (6)
Pyrola secunda (3)
Pyrola sp. (3)
Pyrostegia venusta (2)
Pyrrhopappus carolinianus (3)
Pyrrhopappus pauciflorus (10)
Pyrrhopappus rothrockii (9)
Pyrrocoma (1)
Pyrrocoma apargioides (95)
Pyrrocoma carthamoides var. cusickii (12)
Pyrrocoma crocea (4)
Pyrrocoma crocea var. crocea (13)
Pyrrocoma lanceolata (8)
Pyrrocoma lanceolata var. lanceolata (16)
Pyrrocoma lucida (14)
Pyrrocoma racemosa (6)
Pyrrocoma racemosa var. congesta (5)
Pyrrocoma racemosa var. paniculata (25)
Pyrrocoma racemosa var. pinetorum (13)
Pyrrocoma racemosa var. racemosa (3)
Pyrrocoma racemosa var. sessiflora (10)
Pyrrocoma racemosa var. sessiliflora (31)
Pyrrocoma radiata (2)
Pyrrocoma sp. (6)
Pyrrocoma uniflora (5)
Pyrrocoma uniflora var. gossypina (13)
Pyrrocoma uniflora var. uniflora (26)
Pyrrosia drakeana (3)
Pyrrosia lingua (9)
Pyrrosia polydactyla (3)
Pyrrosia serpens (7)
Pyrus amygdaliformis (15)
Pyrus betulifolia (11)
Pyrus calleryana (45)
Pyrus calleyerana (5)
Pyrus communis (26)
Pyrus communis var. (3)
Pyrus communis x pyrus pyrifolia (1)
Pyrus cordata (7)
Pyrus kawakami (13)
Pyrus kawakamii (8)
Pyrus melanocarpa (1)
Pyrus pashia (10)
Pyrus pyraster (7)
Pyrus pyrifolia (20)
Pyrus salicifolia (4)
Pyrus sp. (4)
Pyrus ussuriensis (15)
Pyrus x bretschneideri (1)
Pyxidanthera barbulata (4)