Pachera candidissima (1)
Pachera multilobata (2)
Pachera multilobatus (1)
Pachicereus pesten-arboriginum (1)
Pachira aquatica (8)
Pachira glabra (3)
Pachycereus marginatus (2)
Pachycereus pecten-aboriginum (8)
Pachycereus pectin-aborigium (1)
Pachycereus pringlei (93)
Pachycereus sp. (2)
Pachycereus tepamo (1)
Pachycereus weberi (3)
Pachycormus discolor (39)
Pachygone laurifolia (10)
Pachygone vitiensis (2)
Pachylobus edulis (1)
Pachymenia saxicola (1)
Pachyphytum bracteosum (3)
Pachyphytum compactum (1)
Pachyphytum glutinicaule (1)
Pachyphytum kimnachii (1)
Pachyphytum oviferum (1)
Pachyphytum sp. (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)
Pachyveria sp. (5)
Packera aurea (16)
Packera bernardina (38)
Packera bolanderi var. bolanderi (32)
Packera breweri (42)
Packera cana (101)
Packera candidissima (7)
Packera clevelandii (34)
Packera crocata (6)
Packera dimorphophylla (2)
Packera eurycephala (10)
Packera eurycephala var. eurycephala (33)
Packera eurycephala var. lewisrosei (24)
Packera fendleri (18)
Packera ganderi (5)
Packera glabella (3)
Packera greenei (66)
Packera hesperia (6)
Packera indecora (6)
Packera ionophylla (63)
Packera layneae (80)
Packera macounii (27)
Packera multilobata (111)
Packera neomexicana (18)
Packera neomexicana var. mutabilis (8)
Packera neomexicana var. neomexicana (3)
Packera pauciflora (40)
Packera pauciflora; (2)
Packera paupercula (4)
Packera plattensis (11)
Packera pseudaurea (9)
Packera pseudaurea var. pseudaurea (2)
Packera quercetorum (4)
Packera sanguisorboides (2)
Packera scalaris var. scalaris (1)
Packera schweinitziana (4)
Packera streptanthifolia (47)
Packera streptanthifolia var. streptanthifolia (16)
Packera subnuda (5)
Packera subnuda var. subnuda (13)
Packera thurberi (5)
Packera werneriifolia (50)
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 (5)
Paeonia lactiflora (23)
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 (51)
Palafoxia arida ssp. arida (3)
Palafoxia arida var. arida (127)
Palafoxia arida var. gigantea (54)
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 (7)
Palafoxia texana var. texana (26)
Palicourea colorata (19)
Palicourea elata (3)
Palicourea guianensis (1)
Palisada parvipapillata (7)
Paliurus spina-christi (13)
Pallavicinia lyellii (1)
Pallenis maritima (4)
Pallenis spinosa (17)
Palmaria palmata (4)
Palustricodon aparinoides (13)
Panax quinquefolius (12)
Panax trifolius (14)
Pancratium canariense (1)
Pancratium maritimum (3)
Pancratium tenuifolium (1)
Pandanus basedowii (1)
Pandanus odorifer (5)
Pandanus sp. (2)
Pandanus spiralis (3)
Pandanus tectorius (11)
Pandanus utilis (4)
Pandanus vandermeeschii (2)
Pandorea jasminoides (9)
Pandorea pandorana (15)
Panicum acuminatum (16)
Panicum acuminatum var. fasciculatum (28)
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 hirticaule (3)
Panicum hirticaule ssp. hirticaule (7)
Panicum miliaceum (1)
Panicum miliaceum ssp. miliaceum (3)
Panicum sonoran (5)
Panicum urvilleanum (19)
Panicum virgatum (2)
Pantoneura plocamioides (1)
Papaver atlanticum (4)
Papaver californicum (34)
Papaver cambricum (5)
Papaver commutatum (11)
Papaver dubium (1)
Papaver gorodkovii (4)
Papaver heterophylla (3)
Papaver heterophyllum (148)
Papaver nudicaule (2)
Papaver orientale (15)
Papaver rhoeas (75)
Papaver somniferum (74)
Papaver somniferum ssp. setigerum (8)
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 (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 mucronulatum (1)
Pappostipa speciosa (2)
Paradisea liliastrum (17)
Parajubaea cocoides (5)
Parajubaea torallyi (4)
Parakeelya eremaea (3)
Parapholis incurva (10)
Parapolystichum pacificum (1)
Paraquilegia caespitosa (1)
Parasenegalia visco (2)
Paraserianthes lophantha (33)
Parathesis chiapensis (3)
Paratrophis anthropophagorum (5)
Parentucellia latifolia (29)
Parentucellia latifolia ssp. albiflora (1)
Parentucellia viscosa (17)
Parietaria hespera (4)
Parietaria hespera var. californica (6)
Parietaria hespera var. hespera (15)
Parietaria judaica (22)
Parietaria judaica ssp. judaica (9)
Parietaria pensylvanica (17)
Parinari curatellifolia (13)
Parinari littoralis (16)
Paris quadrifolia (9)
Parkinsonia aculeata (51)
Parkinsonia florida (113)
Parkinsonia microphylla (71)
Parkinsonia praecox (15)
Parkinsonia praecox ssp. glauca (2)
Parkinsonia sp. (1)
Parkinsonia x sonorae (2)
Parmentiera aculeata (5)
Parnassia cirrata (5)
Parnassia cirrata var. intermedia (55)
Parnassia fimbriata (43)
Parnassia glauca (20)
Parnassia palustris (118)
Parnassia parviflora (4)
Parnassia sp. (1)
Parodia buiningii (6)
Parodia claviceps (1)
Parodia concinna (1)
Parodia crassigibba (13)
Parodia dextrohamata (7)
Parodia erinaceus (2)
Parodia erubescens (1)
Parodia haselbergii (6)
Parodia haselbergii ssp. haselbergii (1)
Parodia horrida (1)
Parodia horstii (1)
Parodia leninghausii (2)
Parodia maasii (2)
Parodia maassii (6)
Parodia magnifica (5)
Parodia mairanana (1)
Parodia mammulosa (3)
Parodia mammulosa ssp. brasiliensis (2)
Parodia microsperma (9)
Parodia mueller-melchersii (3)
Parodia nivosa (7)
Parodia schumanniana (3)
Parodia scopa (15)
Parodia stuemeri (2)
Parodia warasii (1)
Parodia werdermanniana (3)
Paronychia ahartii (32)
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 (20)
Parthenocissus quinquefolia (22)
Parthenocissus sp. (1)
Parthenocissus tricuspidata (9)
Parviphycus antipae (5)
Parvocaulis exigus (1)
Parvocaulis parvula (8)
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 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 oaxacensis (1)
Passiflora pallida (1)
Passiflora parritae x passiflora tarminiana (2)
Passiflora pentaschista (5)
Passiflora pinnatistipula (1)
Passiflora quadrangularis (2)
Passiflora silvestris (7)
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 (10)
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)
Pattalias palmeri var. peninsularis (2)
Pattalias palustris (2)
Paullinia tomentosa (5)
Paulownia fargesii (2)
Paulownia tomentosa (65)
Pauridia capensis (2)
Pauridia serrata (1)
Pavetta edentula (3)
Pavetta schumanniana (2)
Pavonia aurigloba (1)
Pavonia lasiopetala (5)
Paxistima myrsinites (59)
Paysonia stonensis (2)
Pckera dimorphophylla (1)
Pearcea hypocyrtiflora (6)
Pecluma alfredii (2)
Pectiantia breweri (57)
Pectiantia ovalis (17)
Pectiantia pentandra (43)
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 (4)
Pectocarya recurvata (76)
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 (240)
Pedicularis dudleyi (21)
Pedicularis eosa var. flavida (5)
Pedicularis foliosa (2)
Pedicularis groenlandica (120)
Pedicularis gyroflexa (1)
Pedicularis hirsuta (2)
Pedicularis howellii (5)
Pedicularis julica (12)
Pedicularis kerneri (3)
Pedicularis lanata (11)
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 (14)
Pedicularis rainierensis (3)
Pedicularis rostratocapitata (10)
Pedicularis rostratocapitata ssp. rostratocapitata (4)
Pedicularis semibarbata (122)
Pedicularis semibarbata ssp. charlestonensis (4)
Pedicularis sp. (5)
Pedicularis tuberosa (1)
Pedicularis verticillata (5)
Pedilanthus bracteatus (2)
Pedilanthus macrocarpus (3)
Pediocactus bradyi (10)
Pediocactus bradyi ssp. despainii (4)
Pediocactus knowltonii (5)
Pediocactus nigrispinus (1)
Pediocactus paradinei (3)
Pediocactus peeblesianus (1)
Pediocactus peeblesianus ssp. menzelii (3)
Pediocactus sileri (16)
Pediocactus simpsonii (20)
Pediocactus simpsonii var. nigrispina (2)
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 ×hortorum (7)
Pelargonium adriaanii (2)
Pelargonium alternans (4)
Pelargonium bowkeri (4)
Pelargonium capitatum (4)
Pelargonium carnosum ssp. rotundipetalum (1)
Pelargonium cordatum (2)
Pelargonium cordifolium (6)
Pelargonium cucullatum (2)
Pelargonium cucullatum ssp. cucullatum (1)
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 (19)
Pelargonium X hortorum red (1)
Pelazoneuron puberulum var. sonorense (3)
Pelecyphora alversonii (1)
Pelecyphora aselliformis (20)
Pelecyphora chihuahuensis (6)
Pelecyphora chlorantha (2)
Pelecyphora macromeris (10)
Pelecyphora macromeris ssp. runyonii (6)
Pelecyphora minima (4)
Pelecyphora missouriensis (7)
Pelecyphora missouriensis ssp. asperispina (3)
Pelecyphora missouriensis ssp. missouriensis (1)
Pelecyphora sneedii ssp. orcuttii (4)
Pelecyphora sneedii ssp. sneedii (15)
Pelecyphora strobiliformis (14)
Pelecyphora tuberculosa (16)
Pelecyphora vivipara (75)
Peleophycus multiprocarpium (14)
Pellaea andromedifolia (83)
Pellaea brachyptera (22)
Pellaea breweri (20)
Pellaea bridgesii (30)
Pellaea glabella ssp. glabella (5)
Pellaea glabella var. occidentalis (2)
Pellaea glaciogena (1)
Pellaea mucronata (30)
Pellaea mucronata var mucronata (1)
Pellaea mucronata var. californica (44)
Pellaea mucronata var. mucronata (33)
Pellaea sp. (1)
Pellaea truncata (13)
Pellia endiviifolia (5)
Pellia epiphylla (12)
Peltandra sagittifolia (2)
Peltandra virginica (21)
Peltigera aphthosa (1)
Peltophorum africanum (22)
Peltophorum pterocarpum (3)
Pelvetia canaliculata (1)
Pelvetia fastigiata (1)
Pelvetiopsis limitata (4)
Pemphis acidula (2)
Penaea mucronata (1)
Penaea sarcocolla (2)
Peniocereus castellae (4)
Peniocereus cuixmalensis (5)
Peniocereus fosterianus (1)
Peniocereus fosterianus var. nizandensis (2)
Peniocereus greggii (5)
Peniocereus greggii ssp. transmontanus (2)
Peniocereus greggii var. greggii (7)
Peniocereus greggii var. transmontanus (4)
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 (6)
Pennisetum ciliare (16)
Pennisetum clandestinum (23)
Pennisetum glaucum (7)
Pennisetum latifolium (3)
Pennisetum messiacum (3)
Pennisetum oriebtale (1)
Pennisetum setaceum (45)
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 var. praecox (1)
Penstemon barbatus var. torreyi (16)
Penstemon barbatus var. trichander (1)
Penstemon barnebyi (17)
Penstemon barrettiae (9)
Penstemon bicolor (34)
Penstemon bicolor ssp. bicolor (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 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 var. eatonii (3)
Penstemon eatonii var. undosus (12)
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 var. amargosae (15)
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 (72)
Penstemon grinnellii var. grinnellii (98)
Penstemon grinnellii var. scrophularioides (3)
Penstemon hallii (13)
Penstemon hartwegii (3)
Penstemon haydenii (2)
Penstemon hesperius (6)
Penstemon heterodoxus (40)
Penstemon heterodoxus var. cephalophorus (16)
Penstemon heterodoxus var. heterodoxus (59)
Penstemon heterodoxus var. shastensis (44)
Penstemon heterophyllum (1)
Penstemon heterophyllus (63)
Penstemon heterophyllus var. australis (8)
Penstemon heterophyllus var. heterophyllus (74)
Penstemon heterophyllus var. purdyi (19)
Penstemon hirsutus (1)
Penstemon humilis (48)
Penstemon humilis ssp. humilis (3)
Penstemon humilis var. brevifolius (5)
Penstemon humilis var. humilis (13)
Penstemon humilis var. obtusifolius (1)
Penstemon idahoensis (9)
Penstemon immanifestus (19)
Penstemon incertus (19)
Penstemon jamesii (8)
Penstemon janishiae (27)
Penstemon jonesii (13)
Penstemon kingii (10)
Penstemon labrosus (70)
Penstemon laetus (49)
Penstemon laetus var. laetus (78)
Penstemon laetus var. sagittatus (45)
Penstemon laevis (11)
Penstemon laricifolius (15)
Penstemon laricifolius ssp. laricifolius (3)
Penstemon laricifolius var. exilifolius (4)
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. higginsii (3)
Penstemon leonardii var. leonardii (5)
Penstemon linarioides (3)
Penstemon linarioides ssp. linarioides (3)
Penstemon linarioides var. coloradoensis (4)
Penstemon lyallii (7)
Penstemon mensarum (1)
Penstemon miniata ssp. townsendianus (1)
Penstemon miniatus ssp. townsendianus (15)
Penstemon monoensis (32)
Penstemon moriahensis (3)
Penstemon nanus (7)
Penstemon neomexicanus (6)
Penstemon neotericus (19)
Penstemon newberryi (93)
Penstemon newberryi var newberryi (3)
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 roseus (7)
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 secundiflorus var. secundiflorus (15)
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 thompsoniae (32)
Penstemon thompsoniae ssp. jaegeri (8)
Penstemon thurberi (31)
Penstemon tracyi (29)
Penstemon triflorus (1)
Penstemon uintahensis (4)
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)
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 maxonii (2)
Pentagramma pallida (18)
Pentagramma rebmanii (24)
Pentagramma triangularis (74)
Pentagramma triangularis ssp. triangularis (31)
Pentagramma triangularis var. triangularis (5)
Pentagramma viscosa (40)
Pentalinon luteum (2)
Pentameris airoides ssp. airoides (6)
Pentanema helveticum (5)
Pentanema hirtum (13)
Pentanema montanum (3)
Pentanema orientale (2)
Pentanema salicinum (17)
Pentanema spiraeifolium (8)
Pentanema squarrosum (5)
Pentanema verbascifolium (3)
Pentas lanceolata (3)
Pentas lanceolata ssp. lanceolata (1)
Penthorum sedoides (16)
Pentstemon patens (4)
Pentzia incana (7)
Peperomia argyreia (4)
Peperomia asperula (2)
Peperomia bracteata (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 quadrangularis (2)
Peperomia societatis (2)
Peperomia sp. (7)
Peperomia tetragona (1)
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 recurvata (7)
Perezia sp. (1)
Pericallis aurita (2)
Pericallis cruenta (1)
Pericallis sp. (3)
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. crispa (10)
Periploca angustifolia (2)
Periscaria capitata (6)
Perityle bisetosa var. bisetosa (4)
Perityle californica (1)
Perityle carterae (1)
Perityle crassifolia (12)
Perityle crassifolia var. robusta (12)
Perityle cuneata (2)
Perityle emoryi (126)
Perityle emoryii (2)
Perityle gilensis var. gilensis (5)
Perityle rotundifolia (6)
Perityle staurophylla var. staurophylla (3)
Perovskia x (5)
Perrottetia longistylis (2)
Perrottetia sandwicensis (10)
Persea americana (45)
Persea donnelsmithii (2)
Persea indica (4)
Persea lingue (6)
Persicaria amphibia (131)
Persicaria capitata (3)
Persicaria glabra (1)
Persicaria hydropiper (8)
Persicaria hydropiperoides (34)
Persicaria lapathifolia (58)
Persicaria maculosa (24)
Persicaria micrcephala (1)
Persicaria microcephala (1)
Persicaria mitis (6)
Persicaria orientalis (8)
Persicaria pennsylvanica (2)
Persicaria pensylvanica (3)
Persicaria perfoliata (1)
Persicaria punctata (41)
Persicaria punctata x hydropiper (5)
Persicaria punctata; (3)
Persicaria sagittata (11)
Persicaria virginiana (9)
Persicaria wallichii (3)
Pertiyle cuneata (1)
Perymenium oxycarphum (3)
Pescatorea lehmanii (2)
Petalacte coronata (1)
Petalonix thurberi (1)
Petalonyx linearis (49)
Petalonyx nitidus (37)
Petalonyx thurberi (33)
Petalonyx thurberi ssp. gilmanii (12)
Petalonyx thurberi ssp. thurberi (86)
Petalostemum purpureum (2)
Petasites albus (13)
Petasites fragrans (14)
Petasites frigidus (12)
Petasites frigidus var. palmatus (102)
Petasites frigidus var. sagitatus (1)
Petasites frigidus var. sagittatus (1)
Petasites hybridus (7)
Petasites japonicus (2)
Petasites japonicus ssp. giganteus (1)
Petasites paradoxus (7)
Petasites pyrenaicus (3)
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)
Petrogenia repens (4)
Petromarula pinnata (5)
Petrophila longifolia (1)
Petrophile linearis (5)
Petrophytum caespitosum (42)
Petrophytum caespitosum ssp. acuminatum (2)
Petrophytum caespitosum ssp. caespitosum (25)
Petrorhagia dubia (60)
Petrorhagia nanteuilii (3)
Petrorhagia prolifera (10)
Petrorhagia saxifraga (15)
Petrosedum amplexicaule (1)
Petrosedum forsterianum (3)
Petrosedum ochroleucum (8)
Petrosedum pruinatum (1)
Petrosedum rupestre (13)
Petrosedum sediforme (7)
Petrosedum subulatum (1)
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 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)
Peyritschia deyeuxioides (2)
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 (74)
Phacelia bicolor var. bicolor (3)
Phacelia bipinnatifida (2)
Phacelia bolanderi (54)
Phacelia brachyloba (53)
Phacelia breweri (47)
Phacelia californica (104)
Phacelia calthifolia (124)
Phacelia campanularia (108)
Phacelia campanularia var, campanularia (3)
Phacelia campanularia var. campanularia (35)
Phacelia campanularia var. vasiformis (57)
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 corrugata (1)
Phacelia corymbosa (36)
Phacelia crenulata (113)
Phacelia crenulata var. ambigua (97)
Phacelia crenulata var. crenulata (30)
Phacelia crenulata var. minutiflora (31)
Phacelia cryptantha (50)
Phacelia curvipes (91)
Phacelia damnationensis (37)
Phacelia davidsonii (75)
Phacelia distans (218)
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 (192)
Phacelia fremontii; (1)

Phacelia geraniifolia (3)
Phacelia glandulifera (7)
Phacelia grandiflora (51)
Phacelia greenei (16)
Phacelia grisea (30)
Phacelia gymnoclada (13)
Phacelia hastata (33)
Phacelia hastata ssp. hastata (2)
Phacelia hastata var. compacta (107)
Phacelia hastata var. hastata (49)
Phacelia heterophila (6)
Phacelia heterophylla (8)
Phacelia heterophylla var. heterophylla (11)
Phacelia heterophylla var. virgata (69)
Phacelia hirsuta (3)
Phacelia hirtuosa (1)
Phacelia hubbyi (10)
Phacelia humilis (42)
Phacelia humilis var. dudleyi (2)
Phacelia humilis var. humilis (33)
Phacelia hydrophiloides (1)
Phacelia hydrophylloides (67)
Phacelia imbicata (2)
Phacelia imbricata (53)
Phacelia imbricata var. bernardina (1)
Phacelia imbricata var. imbricata (62)
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 longipes (22)
Phacelia lutea var. lutea (14)
Phacelia lyallii (1)
Phacelia lyonii (3)
Phacelia malvifolia (45)
Phacelia malvifolia var. loasifolia (3)
Phacelia malvifolia var. malvifolia (14)
Phacelia marcescens (23)
Phacelia minor (116)
Phacelia minutiflora (5)
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 (5)
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 scopulina (1)
Phacelia secunda (5)
Phacelia sericea (54)
Phacelia sericea ssp. sericea (1)
Phacelia sericea var. ciliosa (11)
Phacelia sericea var. sericea (11)
Phacelia sivinskii (2)
Phacelia sp. (17)
Phacelia stebbinsii (57)
Phacelia stellaris (68)
Phacelia suaveolens (32)
Phacelia tanacetifolia (106)
Phacelia tetramera (5)
Phacelia thermalis (4)
Phacelia vallicola (68)
Phacelia vallis-mortae (52)
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 (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)
Phalocallis coelestis (4)
Phascum cuspidatum (2)
Phaseolus acutifolius (1)
Phaseolus angustissimus (11)
Phaseolus filiformis (41)
Phaseolus grayanus (3)
Phaseolus maculatus (1)
Phaseolus maculatus ssp. maculatus (4)
Phaseolus montanus (1)
Phaseolus parvulus (5)
Phaseolus pauciforus (1)
Phaseolus vulgaris (20)
Phebalium stenophyllum (2)
Phebalium woombye (1)
Phedimus kamtschaticus (9)
Phedimus obtusifolius (1)
Phedimus spurius (8)
Phedimus stellatus (5)
Phedimus stolonifer (2)
Phedimus stoloniferus (1)
Phegopteris connectilis (45)
Phegopteris keraudreniana (6)
Phelipanche ramosa (9)
Phellodendron amurense (10)
Phellodendron chinense (2)
Phemeranthus calcaricus (1)
Phemeranthus mengesii (11)
Phemeranthus rugospermus (24)
Phemeranthus teretifolius (1)
Philadelphus (1)
Philadelphus calcicolus (3)
Philadelphus coronarius (5)
Philadelphus inodorus (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 (3)
Philodendron bipinnatifidum (2)
Philodendron erubescens (1)
Philodendron erubescens 'Red Emerald' (1)
Philodendron fragrantissimum (8)
Philodendron gloriosum (1)
Philodendron hederaceum (1)
Philodendron hederaceum var. hederaceum (1)
Philodendron lacerum (1)
Philodendron quinquenervium (12)
Philodendron radiatum (2)
Philodendron rugosum (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)
Philotheca myoporoides (1)
Phlebodium pseudoaureum (4)
Phleum alpinum (15)
Phleum arenarium (2)
Phleum echinatum (4)
Phleum pratense (58)
Phleum subulatum (1)
Phlomis cashmeriana (1)
Phlomis fruticosa (9)
Phlomis herba-venti (9)
Phlomis kashmeriana (1)
Phlomis lanata (7)
Phlomis lychnitis (2)
Phlomis purpurea (4)
Phlomis viscosa (9)
Phlomoides alpina (2)
Phlomoides laciniata (12)
Phlomoides tuberosa (3)
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 condensata ssp. covillei (4)
Phlox diffusa (173)
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 griseola ssp. tumulosa (4)
Phlox hirsuta (22)
Phlox hoodii (21)
Phlox hoodii ssp. canescens (40)
Phlox hoodii ssp. muscoides (5)
Phlox longifolia (52)
Phlox longifolia ssp. longifolia (4)
Phlox longlifloria (3)
Phlox maculata (7)
Phlox mesoleuca (11)
Phlox multiflora (15)
Phlox muscoides (8)
Phlox nana (24)
Phlox paniculata (23)
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 (89)
Phlox speciosa ssp. occidentalis (17)
Phlox stansburyi (72)
Phlox stansburyi ssp. stansburyi (36)
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)
Pholisma arenarium (75)
Pholisma arenarrium (6)
Pholisma culiacana (1)
Pholisma sonorae (46)
Pholistoma auritum (55)
Pholistoma auritum var. arizonicum (25)
Pholistoma auritum var. auritum (93)
Pholistoma membranaceum (99)
Pholistoma racemosum (32)
Phonus lanatus (7)
Phoradendrom leucarpum ssp. tomentosum (1)
Phoradendron bolleanum (55)
Phoradendron californicum (118)
Phoradendron coryae (5)
Phoradendron juniperinum (39)
Phoradendron leucarpum (9)
Phoradendron leucarpum ssp. macrophyllum (25)
Phoradendron leucarpum ssp. tomentosum (44)
Phoradendron leucarpum subsp. macrophyllum (9)
Phoradendron leucarpum subsp. tomentosum (14)
Phoradendron macrophyllum (2)
Phoradendron sp. (7)
Phoradendron tomentosum (1)
Phoradendron villosum (9)
Phormium tenax (14)
Photinia arbutifolia (4)
Photinia davidiana (15)
Photinia davidsoniae (1)
Photinia fraseri (12)
Photinia glabra (1)
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 lindenii (2)
Phragmipedium lindleyanum (1)
Phragmipedium richterii (1)
Phragmipedium schlimii (3)
Phragmites australis (72)
Phragmites australis ssp. australis (2)
Phreatia myosorus (1)
Phryma leptostachya (21)
Phuopsis stylosa (6)
Phycella cyrtanthoides (2)
Phycodrina elegans (1)
Phycodrys elegans (1)
Phygelius aequalis (2)
Phyla cuneifolia (3)
Phyla lanceolata (22)
Phyla nodiflora (79)
Phylica plumosa (3)
Phylica pubescens (11)
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)
Phyllanthus warnockii (2)
Phyllobolus herbertii (2)
Phyllobolus latipetalus (3)
Phyllobolus prasinus (5)
Phyllobolus pumilus (2)
Phyllobolus tenuiflorus (5)
Phyllocladus aspleniifolius (3)
Phyllocladus trichomanoides (2)
Phyllocladus trichomanoides var. alpinus (2)
Phyllodictyon anastomosans (12)
Phyllodoce aleutica (2)
Phyllodoce breweri (101)
Phyllodoce caerulea (5)
Phyllodoce empetriformis (44)
Phyllodoce glandulifera (1)
Phyllodoce glanduliflora (19)
Phyllogeiton discolor (11)
Phyllogeiton zeyheri (5)
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)
Phymaspermum acerosum (2)
Phymatidium falcifolium (3)
Phymatoceros phymatodes (2)
Phymatosorus commutatus (12)
Phymatosorus grossus (10)
Phymatosorus membranifolius (11)
Phymatosorus parksii (1)
Phymatosorus sp. (3)
Phymosia umbellata (5)
Physalis acutifolia (12)
Physalis angulata (26)
Physalis cinerascens (5)
Physalis cinerascens var. cinerascens (11)
Physalis crassifolia (174)
Physalis crassifolia var. crassifolia (10)
Physalis fendleri (2)
Physalis glabra (9)
Physalis hederifolia (20)
Physalis heterophylla (4)
Physalis heterophylla var. heterophylla (8)
Physalis ixocarpa (2)
Physalis neomexicana (2)
Physalis peruviana (5)
Physalis philadelphica (21)
Physalis pubescens (18)
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 (35)
Physaria floribunda (2)
Physaria gordonii (29)
Physaria intermedia (9)
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 (15)
Physaria tenella (56)
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 persicifolium (5)
Phyteuma scheuchzeri (7)
Phyteuma sieberi (2)
Phyteuma sp. (1)
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 alcoquiana var. alcoquiana (2)
Picea breweriana (46)
Picea chihuahuana (5)
Picea engelmannii (59)
Picea engelmannii ssp. mexicana (4)
Picea jezoensis (1)
Picea laxa (29)
Picea mariana (16)
Picea omorika (2)
Picea orientalis (23)
Picea polita (25)
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 (10)
Picradeniopsis bigelovii (3)
Picradeniopsis multiflora (25)
Picradeniopsis oppositifolia (3)
Picradeniopsis schaffneri (11)
Picradeniopsis woodhousei (4)
Picramnia glazioviana (19)
Picris hieracioides (14)
Pieris floribunda (4)
Pieris formosa (1)
Pieris japonica (29)
Pieris japonica var. japonica (2)
Pieris nana (2)
Pieris rapae (3)
Pigea calycina (1)
Pilanthus peduncularis (1)
Pilea cadierei (4)
Pilea microphylla (2)
Pilea mollis (2)
Pilea nummulariifolia (1)
Pilea peperomioides (3)
Pilea pumila (7)
Piliostigma thonningii (3)
Pillansia templemannii (1)
Pilocarpus riedelianus (26)
Pilophorus acicularis (3)
Pilosella aurantiaca (27)
Pilosella caespitosa (8)
Pilosella horrida (1)
Pilosella officinarum (17)
Pilosella piloselloides (3)
Pilosella piloselloides ssp. praealta (1)
Pilosocereus alensis (8)
Pilosocereus aurisetus (3)
Pilosocereus glaucochrous (1)
Pilosocereus lanuginosus (1)
Pilosocereus leucocephalus (1)
Pilosocereus pachycladus (5)
Pilosocereus pachycladus ssp. pachycladus (1)
Pilosocereus polygonus (12)
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)
Pinalia elata (1)
Pinalia globulifera (1)
Pinanga coronata (7)
Pinaropappus procumbens (7)
Pinaropappus roseus (4)
Pinguicula agnata (2)
Pinguicula alpina (6)
Pinguicula antarctica (1)
Pinguicula caerulea (16)
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 (98)
Pinguicula macroceras ssp. macroceras (17)
Pinguicula macrophylla (2)
Pinguicula mariae (4)
Pinguicula moctezumae (2)
Pinguicula moranensis (23)
Pinguicula moranensis var. moranensis (3)
Pinguicula moranensis x ehlersiae (1)
Pinguicula pilosa (1)
Pinguicula planifolia (27)
Pinguicula potosiensis (1)
Pinguicula primuliflora (27)
Pinguicula pumila (15)
Pinguicula reticulata (4)
Pinguicula rotundiflora (3)
Pinguicula sp. (6)
Pinguicula vallisneriifolia (31)
Pinguicula vulgaris (29)
Pinnasa bergii (12)
Pinus albicaulis (150)
Pinus aristata (12)
Pinus arizonica (8)
Pinus arizonica var. arizonica (1)
Pinus arizonica var. ornelasii (6)
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 (7)
Pinus bungeana (27)
Pinus canariensis (48)
Pinus caribaea var. hondurensis (1)
Pinus cembra (5)
Pinus cembroides (8)
Pinus cembroides ssp. orizabensis (5)
Pinus cembroides var. cembroides (4)
Pinus contorta (86)
Pinus contorta ssp. bolanderi (25)
Pinus contorta ssp. contorta (34)
Pinus contorta ssp. murrayana (87)
Pinus contorta subsp. bolanderi (9)
Pinus contorta subsp. murrayana (1)
Pinus contorta var. contorta (13)
Pinus contorta var. latifolia (14)
Pinus contorta var. murrayana (24)
Pinus coulteri (100)
Pinus densiflora (23)
Pinus discolor (11)
Pinus douglasiana (3)
Pinus durangensis (5)
Pinus edulis (67)
Pinus elliottii (1)
Pinus engelmannii (16)
Pinus fenzeliana (2)
Pinus flexilis (105)
Pinus glabra (2)
Pinus greggii (1)
Pinus halepensis (36)
Pinus hartwegii (2)
Pinus heldreichii (23)
Pinus herrerae (6)
Pinus jeffreyi (253)
Pinus johanis (6)
Pinus koraiensis (32)
Pinus lambertiana (156)
Pinus leiophylla var. chihuahuana (12)
Pinus leiophylla var. leiophylla (3)
Pinus longaeva (333)
Pinus luchuensis (5)
Pinus lumholtzii (6)
Pinus maximartinezii (5)
Pinus monophylla (182)
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 mugo (41)
Pinus muricata (82)
Pinus nigra (17)
Pinus oocarpa (4)
Pinus palustris (38)
Pinus parviflora (24)
Pinus patula (6)
Pinus pinaster (8)
Pinus pinea (30)
Pinus ponderosa (401)
Pinus ponderosa ssp. ponderosa (6)
Pinus ponderosa var. pacifica (9)
Pinus ponderosa var. ponderosa (18)
Pinus ponderosa var. scopulorum (39)
Pinus ponderosa var. washoensis (5)
Pinus pseudostrobus (7)
Pinus pseudostrobus var. apulcensis (3)
Pinus pseudostrobus var. pseudostrobus (4)
Pinus pumila (3)
Pinus quadrifolia (32)
Pinus radiata (106)
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 strobus (58)
Pinus sylvestris (26)
Pinus sylvestris var. sylvestris (4)
Pinus taeda (13)
Pinus taiwanensis (9)
Pinus techunumanii (2)
Pinus torreyana (46)
Pinus torreyana ssp. insularis (10)
Pinus torreyana ssp. torreyana (28)
Pinus uncinata (3)
Pinus uncinata ssp. uliginosa (6)
Pinus veitchii (8)
Pinus virginiana (19)
Pinus wallichiana (27)
Pinus x digenea (2)
Piper arboreum (12)
Piper auritum (12)
Piper excelsum (1)
Piper glabrescens (1)
Piper methysticum (1)
Piper nigrum (1)
Piper sarmentosum (1)
Piperia candida (48)
Piperia colemanii (61)
Piperia cooperi (45)
Piperia elegans (28)
Piperia elegans ssp. decurtata (12)
Piperia elegans ssp. elegans (38)
Piperia elongata (72)
Piperia leptopetala (11)
Piperia michaelii (38)
Piperia transversa (111)
Piperia unalascensis (51)
Piperia yadonii (25)
Piptatheropsis exigua (7)
Piptatheropsis micrantha (7)
Piptochaetium fimbriatum (2)
Pipturus albidus (5)
Piriqueta cistoides ssp. caroliniana (2)
Piscidia mollis (8)
Pisonia capitata (4)
Pisonia flavescens (2)
Pisonia tahitensis (3)
Pistacia atlantica (4)
Pistacia chinensis (43)
Pistacia lentiscus (20)
Pistacia mexicana (3)
Pistacia terebinthus (2)
Pistacia vera (18)
Pistia stratiotes (12)
Pistia stratoides (2)
Pistorinia hispanica (7)
Pisum sativum (4)
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)
Pittocaulon praecox (6)
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 phillyraeoides (8)
Pittosporum sp. (4)
Pittosporum taitense (1)
Pittosporum tenuifolium (35)
Pittosporum tobira (39)
Pittosporum umbellatum (1)
Pittosporum undulatum (27)
Pittosporum viridiflorum (10)
Pityopsis aspera (3)
Pityopsis flexuosa (3)
Pityopsis graminifolia (1)
Pityopsis graminifolia var. aequifolia (3)
Pityopsis graminifolia var. graminifolia (3)
Pityopsis latifolia (6)
Pityopsis oligantha (3)
Pityopus californicus (27)
Pityrogramma calomelanos (10)
Plagianthus regius (2)
Plagiobothrys acanthocarpus (30)
Plagiobothrys arizonicus (32)
Plagiobothrys austiniae (26)
Plagiobothrys bracteatus (28)
Plagiobothrys canescens (44)
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 (36)
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 (12)
Plagiobothrys glaber (10)
Plagiobothrys glyptocarpus (4)
Plagiobothrys glyptocarpus var. glyptocarpus (8)
Plagiobothrys glyptocarpus var. modestus (2)
Plagiobothrys greenei (25)
Plagiobothrys hirtus (8)
Plagiobothrys hispidulus (13)
Plagiobothrys hispidus (14)
Plagiobothrys humistratus (34)
Plagiobothrys hystriculus (18)
Plagiobothrys infectivus (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 (125)
Plagiobothrys parishii (28)
Plagiobothrys reticulatus (2)
Plagiobothrys reticulatus var. reticulatus (7)
Plagiobothrys reticulatus var. rossianorum (9)
Plagiobothrys salsus (13)
Plagiobothrys scouleri (3)
Plagiobothrys scouleri var. hispidulus (7)
Plagiobothrys scouleri var. scouleri (3)
Plagiobothrys scriptus (22)
Plagiobothrys shastensis (17)
Plagiobothrys sp. (24)
Plagiobothrys sp. b (5)
Plagiobothrys stipitatus (8)
Plagiobothrys stipitatus var. micranthus (37)
Plagiobothrys stipitatus var. stipitatus (14)
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 (14)
Plagiobothrys torreyi var. torreyi (7)
Plagiobothrys torreyi? (3)
Plagiobothrys trachycarpus (8)
Plagiobothrys uncinatus (15)
Plagiobothrys undulatus (21)
Plagiochelius tanacetoides (1)
Plagiochila porelloides (5)
Plagiogyria stenoptera (1)
Plagiomnium cuspidatum (2)
Plagiomnium insigne (1)
Plagiomnium medium (4)
Plagiomnium venustum (1)
Plagiorhegma dubium (1)
Plagiothecium cavifolium (6)
Plagiothecium denticulatum (2)
Plagiothecium laetum (1)
Plagiothecium piliferum (12)
Plagiothecium undulatum (2)
Plagirhegma dubia (12)
Plagius grandis (2)
Planodes virginica (13)
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 indica (6)
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. maritima (8)
Plantago media (13)
Plantago ovata (63)
Plantago ovata var. fastigiata (8)
Plantago ovata var. insularis (4)
Plantago patagonica (42)
Plantago rhodosperma (19)
Plantago serraria (8)
Plantago sp. (5)
Plantago subnuda (42)
Plantago subulata (4)
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 (16)
Platanthera cristata (3)
Platanthera dilatata (34)
Platanthera dilatata var. albiflora (1)
Platanthera dilatata var. dilatata (14)
Platanthera dilatata var. leucostachys (205)
Platanthera dilitata (1)
Platanthera elongata (7)
Platanthera ephemerantha (6)
Platanthera flava (8)
Platanthera grandiflora (12)
Platanthera hookeri (7)
Platanthera huronensis (17)
Platanthera hyperborea (5)
Platanthera hyperborea var. hyperborea (7)
Platanthera integra (10)
Platanthera lacera (25)
Platanthera leucophaea (11)
Platanthera nivea (1)
Platanthera obtusata ssp. obtusata (12)
Platanthera orbiculata (30)
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 (56)
Platanthera tescamnis (24)
Platanthera transversa (11)
Platanthera unalascensis (15)
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 (8)
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 (25)
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 californicus (307)
Plecostachys serphyllifolia (8)
Plecostachys serpyllifolia (13)
Plecrtranthus hybrid (2)
Plectocephalus americanus (24)
Plectocephalus rothrockii (14)
Plectranthus (1)
Plectranthus chirindensis (4)
Plectranthus ciliatus (18)
Plectranthus ecklonii (2)
Plectranthus ernstii (5)
Plectranthus fosteri (1)
Plectranthus fruticosus (2)
Plectranthus oertendahlii (4)
Plectranthus saccatus (1)
Plectranthus sp. (12)
Plectranthus tomentosa (2)
Plectranthus verticillatus (1)
Plectranthus zuluensis (5)
Plectritis (1)
Plectritis ciliosa (56)
Plectritis cilosa (1)
Plectritis congesta (4)
Plectritis congesta ssp. brachystemon (28)
Plectritis congesta ssp. congesta (9)
Plectritis congesta subsp. brachystemon (3)
Plectritis congestum ssp. brachystemon (1)
Plectritis macrocera (72)
Plectritis sp. (6)
Plectrocarpa arborea (2)
Plectrocarpa bonariensis (1)
Pleiacanthus spinosus (110)
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 grandiflora (1)
Pleione iris (1)
Pleione limpritchii (2)
Pleione shantung (6)
Pleione shantung ssp. muriel harberd (1)
Pleione shantung ssp. ridgeway (2)
Pleione snow-bunting (1)
Pleione soufriere (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)
Pleonosporium complanatum (1)
Pleopeltis angusta (2)
Pleopeltis appressa (1)
Pleopeltis guttata (4)
Pleopeltis gyroflexa (1)
Pleopeltis lepidotricha (3)
Pleopeltis macrocarpa (2)
Pleopeltis pinnatifida (1)
Pleopeltis polylepis (1)
Pleopeltis pyrrholepis (7)
Pleopeltis rosei (3)
Pleopeltis thyssanolepis (5)
Pleopeltis x melanoneuron (1)
Pleradenophora bilocularis (21)
Pleroma cardinale (1)
Pleroma foveolatum (4)
Pleroma heteromallum (8)
Pleroma urvilleanum (21)
Plesioneuron sp. (8)
Pleuricospora fimbriolata (62)
Pleuridium (1)
Pleuridium acuminatum (4)
Pleuridium mexicanum (3)
Pleuridium subulatum (3)
Pleuridium subulatum/acuminatum (1)
Pleuroconis pluriseta (4)
Pleurocoronis pluriseta (71)
Pleurolobus gangeticus (2)
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 microcardia (2)
Pleurothallis niveoglobula (3)
Pleurothallis nuda (2)
Pleurothallis palliolata (1)
Pleurothallis quadrifida (1)
Pleurothallis sp. (1)
Pleurothallis stricta (4)
Pleurothallis teagueii (1)
Pleurozium schreberi (4)
Plinia cauliflora (3)
Plocamium cartilagineum (1)
Pluchea baccharis (1)
Pluchea carolinensis (8)
Pluchea odorata (17)
Pluchea odorata var. odorata (57)
Pluchea sericea (91)
Plumbago auriculata (24)
Plumbago caerulea (4)
Plumbago capensis (1)
Plumbago europaea (8)
Plumbago sp. (1)
Plumbago zeylanica (2)
Plumeria acutifolia (2)
Plumeria obtusa (22)
Plumeria obtusa var. obtusa (1)
Plumeria pudica (10)
Plumeria rubra (30)
Plumeria sp. (1)
Plummeria rubra (1)
Poa alpina (4)
Poa annua (37)
Poa arnowiae (3)
Poa atropurpurea (24)

Poa bigelovii (14)
Poa bolanderi (10)
Poa bulbosa (47)
Poa bulbosa var. vivipara (6)
Poa compressa (4)
Poa confinis (4)
Poa cusickii (8)
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 (12)
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 (6)
Poa pratensis (15)
Poa pratensis ssp. agassizensis (1)
Poa pringlei (2)
Poa rhizomata (3)
Poa secunda (22)
Poa secunda ssp. juncifolia (3)
Poa secunda ssp. secunda (32)
Poa secunda var. scabrella (3)
Poa sierrae (57)
Poa stebbinsii (3)
Poa suksdorfii (1)
Poa thomasii (4)
Poa trivialis (4)
Poa unilateralis (5)
Poa unilateralis ssp. unilateralis (12)
Poa wheeleri (7)
Podachaenium chiapanum (2)
Podachaenium eminens (2)
Podalyria oleaefolia (1)
Podanthus mitiqui (2)
Podistera nevadensis (18)
Podocarpus coriaceus (1)
Podocarpus elongatus (3)
Podocarpus gracilior (8)
Podocarpus henkelii (11)
Podocarpus laetus (4)
Podocarpus latifolius (31)
Podocarpus macrophylla (8)
Podocarpus macrophyllus (26)
Podocarpus macrophyllus var. maki (2)
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)
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 (41)
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 (24)
Polanisia unglandulosa (1)
Polaskia chende (2)
Polemonium brandegeei (8)
Polemonium caeruleum (1)
Polemonium californicum (69)
Polemonium carneum (42)
Polemonium chartaceum (7)
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 (57)
Polemonium occidentale ssp. occidentale (13)
Polemonium pauciflorum (3)
Polemonium pulcherrimum (34)
Polemonium pulcherrimum ssp. pulcherrimum (17)
Polemonium pulcherrimum var. delicatum (3)
Polemonium pulcherrimum var. pilosum (4)
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 villosum (4)
Polemonium viscosum (36)
Polemonum eddyense (4)
Poliomintha glabrescens (7)
Poliomintha longiflora (5)
Poliothyrsis sinensis (3)
Polkystichum scopulinum (1)
Polyachyrus poeppigii (5)
Polybotrya speciosa (1)
Polycalymma stuartii (1)
Polycarpon tetraphyllum (45)
Polycarpon tetraphyllum subsp. depressum (13)
Polycarpon tetraphyllum var. tetraphyllum (19)
Polyctenium fremontii (24)
Polygala alpestris (6)
Polygala amarella (2)
Polygala amphothrix (5)
Polygala balduinii (3)
Polygala bracteolata (3)
Polygala calcarea (3)
Polygala comosa (3)
Polygala dalmesiana (7)
Polygala forojulensis (3)
Polygala garcinii (1)
Polygala macradenia var. macradenia (10)
Polygala monspeliaca (3)
Polygala myrtifolia (12)
Polygala virgata (4)
Polygala vulgaris (1)
Polygala x dalmaisiana (2)
Polygaloides chamaebuxus (8)
Polygaloides paucifolia (10)
Polygonatum biflorum (15)
Polygonatum multiflorum (9)
Polygonatum odoratum (15)
Polygonatum pubescens (21)
Polygonatum verticillatum (6)
Polygonum arenastrum (11)
Polygonum argyrocoleon (15)
Polygonum articulatum (20)
Polygonum aviculare (37)
Polygonum aviculare ssp. aviculare (2)
Polygonum aviculare ssp. depressum (35)
Polygonum aviculare ssp. rurivagum (1)
Polygonum aviculare subsp. depressum (4)
Polygonum bidwelliae (40)
Polygonum bistoroides (1)
Polygonum bolanderi (36)
Polygonum californicum (23)
Polygonum cilinode (8)
Polygonum douglasii (37)
Polygonum douglasii ssp. douglasii (2)
Polygonum fowleri (4)
Polygonum hickmanii (15)
Polygonum majus (9)
Polygonum marinense (4)
Polygonum minimum (25)
Polygonum multiflorum (5)
Polygonum oxyspermum (2)
Polygonum paronychia (97)
Polygonum parryi (12)
Polygonum patulum (7)
Polygonum polygaloides (18)
Polygonum polygaloides ssp. confertiflorum (12)
Polygonum polygaloides ssp. esotericum (3)
Polygonum polygaloides ssp. kelloggii (23)
Polygonum ramosisimum (2)
Polygonum ramosissimum (18)
Polygonum sawatchense ssp. oblivium (9)
Polygonum sawatchense subsp. sawatchense (2)
Polygonum shastense (87)
Polygonum sp. (8)
Polygonum spergulariiforme (9)
Polylepis australis (6)
Polylepis incana (1)
Polylepis sp. (4)
Polymnia canadensis (36)
Polypodium alan-smithii (1)
Polypodium alavae (1)
Polypodium amorphum (1)
Polypodium californicum (57)
Polypodium calirhiza (35)
Polypodium cambricum (6)
Polypodium colpodes (2)
Polypodium glycyrrhiza (48)
Polypodium hesperium (15)
Polypodium interjectum (2)
Polypodium leptotrichum (2)
Polypodium pellucidum var. pellucidum (5)
Polypodium scouleri (41)
Polypodium sp. (3)
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 hawaiensis (9)
Polyscias oahuensis (3)
Polyscias paniculata (15)
Polyscias scutellaria (1)
Polyscias verrucosa (2)
Polysiphonia bifurcata (1)
Polysiphonia scopulorum (10)
Polysiphonia sp. (probably p. pacifica) (1)
Polyspora longicarpa (2)
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 orbiculatum (1)
Polystichum pilosum (1)
Polystichum polyblepharum (5)
Polystichum proliferum (3)
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)
Pontederia azurea (1)
Pontederia cordata (43)
Pontederia crassipes (20)
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 (12)
Populus fremontii (45)
Populus fremontii ssp. fremontii (113)
Populus fremontii ssp. mesetae (4)
Populus grandidentata (28)
Populus nigra (3)
Populus simonii (2)
Populus songarica (3)
Populus sp. (18)
Populus tremula (14)
Populus tremuloides (391)
Populus trichocarpa (103)
Populus tristis (54)
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 angustifolia (26)
Porlieria microphylla (1)
Porophyllum gracile (102)
Porophyllum pausodynum (7)
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)
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)
Portulacaria namaquensis (1)
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 (22)
Potentilla anserina ssp. anserina (15)
Potentilla anserina ssp. pacifica (70)
Potentilla argentea (11)
Potentilla argyrocoma var. moranii (7)
Potentilla atrosanguinea (4)
Potentilla aurea (8)
Potentilla baileyi (1)
Potentilla basaltica (8)
Potentilla berryi (4)
Potentilla biennis (22)
Potentilla breweri (62)
Potentilla bruceae (7)
Potentilla carniolica (22)
Potentilla caulescens (6)
Potentilla cinerea (4)
Potentilla clevelandii (1)
Potentilla clusiana (8)
Potentilla concinna var. proxima (5)
Potentilla congesta (2)
Potentilla congesta var. nemorosa (9)
Potentilla cottamii (1)
Potentilla crantzii (4)
Potentilla cristae (18)
Potentilla daucifolia (12)
Potentilla daucifolia var. caruifolia (3)
Potentilla discolor (2)
Potentilla diversifolia var. diversifolia (8)
Potentilla douglasii (3)
Potentilla douglasii var. pseudocapitata (5)
Potentilla drummondii (27)
Potentilla effusa (2)
Potentilla egedii (2)
Potentilla emarginata (1)
Potentilla erecta (5)
Potentilla flabellifolia (57)
Potentilla furcata (1)
Potentilla glandulosa ssp. ashlandica (2)
Potentilla glaucophila var. glaucophila (4)
Potentilla glaucophylla (2)
Potentilla glaucophylla var. glaucophylla (12)
Potentilla gordonii (15)
Potentilla gordonii var. ursinorum (2)
Potentilla gracilis (59)
Potentilla gracilis var. brunnescens (3)
Potentilla gracilis var. elmeri (31)
Potentilla gracilis var. fastigiata (73)
Potentilla gracilis var. flabelliformis (10)
Potentilla gracilis var. gracilis (11)
Potentilla grayi (4)
Potentilla griffithii (2)
Potentilla hendersonii (23)
Potentilla heptaphylla (4)
Potentilla heptaphylla ssp. australis (5)
Potentilla hickmanii (26)
Potentilla hippiana (16)
Potentilla hispidula (5)
Potentilla holmgrenii (1)
Potentilla howellii (6)
Potentilla hybrid (2)
Potentilla hyparctica (4)
Potentilla indica (19)
Potentilla jaegeri (4)
Potentilla jepsonii (16)
Potentilla kingii var. eremica (8)
Potentilla lindleyi (1)
Potentilla luteosericea (4)
Potentilla lycopodioides (1)
Potentilla lycopodioides var. megalopetala (1)
Potentilla micrantha (10)
Potentilla millefolia (27)
Potentilla morefieldii (17)
Potentilla muirii (1)
Potentilla newberryi (6)
Potentilla nitida (12)
Potentilla nivea (8)
Potentilla norrelmukana (4)
Potentilla norvegica (30)
Potentilla ovina (2)
Potentilla parryi (3)
Potentilla pensylvanica (10)
Potentilla pensylvanica var. strigosa (1)
Potentilla pseudosericea (17)
Potentilla pulchella (1)
Potentilla pulcherrima (6)
Potentilla purpurascens (1)
Potentilla pusilla (14)
Potentilla recta (21)
Potentilla reptans (24)
Potentilla rimicola (24)
Potentilla rimicola var. rimicola (1)
Potentilla rivalis (8)
Potentilla rubricaulis (1)
Potentilla sabulosa (18)
Potentilla santolinoides (1)
Potentilla sericata (11)
Potentilla setosa (5)
Potentilla simplex (3)
Potentilla sp. (5)
Potentilla sterilis (6)
Potentilla subviscosa (13)
Potentilla supina (1)
Potentilla thurberi (8)
Potentilla tilingii var. tilingii (5)
Potentilla tommasiniana (6)
Potentilla uniflora (4)
Potentilla versicolor var. versicolor (3)
Potentilla webberi (10)
Potentilla wheeleri (6)
Potentilla yadonii (1)
Potentillla millefolia (1)
Potentiulla glandulosa (1)
Poteridium annuum (29)
Poterium sanguisorba (24)
Pothos longipes (2)
Pouteria caimito (3)
Pouteria grayana (8)
Pouteria sapota (4)
Pouteria sapote (2)
Pouteria viridis (2)
Pouzolzia mixta (4)
Prasium majus (7)
Praxelis clematidea (5)
Predaea laciniosa (39)
Preissia quadrata (23)
Premna serratifolia (2)
Prenanthella exigua (16)
Prenanthes trifoliata (5)
Prepodesma orpenii (1)
Prestoea acuminata (1)
Prestoea acuminata var. montana (3)
Priacma serrata (2)
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 austrofrigida (2)
Primula bhutanica (1)
Primula boothii (1)
Primula boothii ssp. alba (1)
Primula boothii ssp. stolonifera (1)
Primula bracteata ssp. ace 1671 (1)
Primula bullata var. forrestii (1)
Primula capillaris (3)
Primula capitata ssp. mooreana (4)
Primula carniolica (14)
Primula clevelandii (53)
Primula clevelandii ssp. patulum (5)
Primula clevelandii var. clevelandii (79)
Primula clevelandii var. gracilis (17)
Primula clevelandii var. iinsularis (3)
Primula clevelandii var. insularis (21)
Primula clevelandii var. patula (85)
Primula columnea (7)
Primula conjugens (13)
Primula conjugens var. conjugens (1)
Primula conjugens var. viscida (2)
Primula darialica (1)
Primula denticulata (5)
Primula drummondiana (3)
Primula dryadifolia ssp. dryadifolia (1)
Primula edgeworthii ssp. alba (1)
Primula egaliksensis (3)
Primula elatior (29)
Primula eximia (2)
Primula farinosa (20)
Primula fassettii (4)
Primula filipes (2)
Primula fragrans (71)
Primula gaubeana (1)
Primula gracilipes (1)
Primula halleri (13)
Primula hendersonii (241)
Primula hirsuta (1)
Primula integrifolia (6)
Primula intricata (2)
Primula jeffreyi (127)
Primula kisoana ssp. alba (1)
Primula kitaibeliana (12)
Primula latiloba (4)
Primula laurentiana (1)
Primula lismore ssp. pink ice (1)
Primula lismore-yellow (2)
Primula malacoides (1)
Primula marginata (1)
Primula marginata ssp. linda pope (2)
Primula marginata ssp. white linda pope (3)
Primula maximowiczii (1)
Primula meadia (18)
Primula minima (11)
Primula minkwitziae (1)
Primula mistassinica (18)
Primula nutans (1)
Primula obconica (5)
Primula parryi (25)
Primula pauciflora (45)
Primula pauciflora var. pauciflora (36)
Primula pauciflora var. pulchella (4)
Primula pauciflora var. pulchellum (1)
Primula pauciflora var. shoshonensis (3)
Primula poetica (8)
Primula poissonii (3)
Primula polyantha (7)
Primula polyanthus (1)
Primula primulina (1)
Primula pulchellum (2)
Primula pulchra (1)
Primula reinei ssp. kitakadensis (1)
Primula renifolia (1)
Primula rusbyi (7)
Primula scotica (2)
Primula sonchifolia (2)
Primula sp. (21)
Primula subalpina (5)
Primula suffrutescens (95)
Primula tetrandra (100)
Primula tschuktschorum (1)
Primula veris (27)
Primula veris ssp. macrocalyx (1)
Primula veris ssp. veris (1)
Primula villosa (10)
Primula voronovi (1)
Primula vulgaris (21)
Primula vulgaris ssp. vulgaris (24)
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 beccariana (5)
Pritchardia flynnii (2)
Pritchardia gordonii (1)
Pritchardia maideniana (10)
Pritchardia minor (4)
Pritchardia napaliensis (6)
Pritchardia pacifica (2)
Pritchardia remota (10)
Pritchardia schattaueri (2)
Pritchardia thurstonii (1)
Priva mexicana (11)
Proboscidea althaeifolia (148)
Proboscidea diversifolia (1)
Proboscidea louisianica (19)
Proboscidea louisianica ssp louisianica (1)
Proboscidea louisianica ssp. fragrans (1)
Proboscidea louisianica ssp. louisianica (33)
Proboscidea lutea (51)
Proboscidea parviflora (17)
Proboscidea parviflora ssp parviflora (2)
Proboscidea parviflora ssp. gracillima (1)
Proboscidea parviflora ssp. parviflora (1)
Proboscidea sabulosa (4)
Proboscidea sp. (2)
Proboscidia althaeifolia (5)
Procris pedunculata var. Pedunculata (3)
Proiphys amboinensis (1)
Promenea meadowgold (2)
Prosartes disporum (1)
Prosartes hookeri (102)
Prosartes hookeri var. oregana (1)
Prosartes lanuginosa (2)
Prosartes parvifolia (6)
Prosartes smithii (75)
Prosartes trachycarpa (6)
Prosopis chilensis (2)
Prosopis glandulosa var. glandulosa (7)
Prosopis juliflora (2)
Prosopis juliflora var. glandulosa (3)
Prosopis pubescens (2)
Prosopis sp. (5)
Prosopis velutina (1)
Prospero autumnale (10)
Prospero elisae (5)
Prostanthera ovalifolia (1)
Prostechea cochleata (2)
Prosthechea citrina (2)
Prosthechea cochleata (8)
Prosthechea cochleata var. cochleata (1)
Prosthechea fragrans (1)
Prosthechea grammatoglossa (4)
Prosthechea hartwegii (3)
Prosthechea prismatocarpa (2)
Prosthechea pterocarpa (2)
Protea amplexicaulis (3)
Protea caffra (1)
Protea cynaroides (16)
Protea eximia (3)
Protea gaguedi (1)
Protea longifolia (1)
Protea magnifica (2)
Protea nana (1)
Protea neriifolia (13)
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 (24)
Prunella vulgaris var. lanceolata (52)
Prunella vulgaris var. vulgaris (7)
Prunus africana (13)
Prunus americana (8)
Prunus andersonii (101)
Prunus angustifolia (4)
Prunus armeniaca (28)
Prunus avium (45)
Prunus blireana (1)
Prunus brachybotrya (8)
Prunus campanulata (7)
Prunus caroliniana (7)
Prunus cerasifera (65)
Prunus cerasifera var. (8)
Prunus cerasoides (4)
Prunus cerasus (3)
Prunus cistena (4)
Prunus cortapico (1)
Prunus domestica (18)
Prunus dulcis (19)
Prunus dulcis var. dulcis (1)
Prunus emarginata (120)
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 hybrid (2)
Prunus ilicifolia (63)
Prunus ilicifolia ssp. ilicifolia (39)
Prunus ilicifolia ssp. lyonii (6)
Prunus ilicifolia var. occidentalis (3)
Prunus incisa (2)
Prunus laurocerasus (33)
Prunus laurocerasus var. zambeliana (7)
Prunus lusitanica (13)
Prunus lusitanica ssp. 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 (17)
Prunus persica var. (4)
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 (44)
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 (16)
Prunus transarisanensis (3)
Prunus triloba (8)
Prunus virginiana (58)
Prunus virginiana var. demissa (81)
Prunus virginiana var. melanocarpa (1)
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 coarctata (2)
Psammisia ramiflora (2)
Psammophiliella muralis (3)
Psathyrotes annua (40)
Psathyrotes pilifera (6)
Psathyrotes ramosissim (3)
Psathyrotes ramosissima (121)
Psathyrotes sp. (1)
Psathyrotopsis scaposa (14)
Psephellus dealbatus (4)
Psephellus simplicicaulis (2)
Pseudalbizia sinaloensis (5)
Pseudelephantopus spicatus (7)
Pseudephebe pubescens (1)
Pseuderanthemum carruthersii var. carruthersii (1)
Pseuderanthemum maculatum (7)
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)
Pseudocodon grey-wilsonii (4)
Pseudocodon vinciflorus (1)
Pseudocydonia sinensis (1)
Pseudodictamnus acetabulosus (2)
Pseudodictamnus hispanicus (2)
Pseudodictamnus mediterraneus (3)
Pseudofumaria alba (7)
Pseudognaphalium aldunateoides (3)
Pseudognaphalium beneolens (21)
Pseudognaphalium biolettii (35)
Pseudognaphalium californicum (113)
Pseudognaphalium californicum x stramineum (6)
Pseudognaphalium canescens (28)
Pseudognaphalium jaliscense (2)
Pseudognaphalium leucocephalum (17)
Pseudognaphalium luteoalbum (65)
Pseudognaphalium macounii (10)
Pseudognaphalium microcephalum (11)
Pseudognaphalium obtusifolium (21)
Pseudognaphalium ramosissimum (69)
Pseudognaphalium sp. (3)
Pseudognaphalium stramineum (105)
Pseudognaphalium thermale (28)
Pseudognaphalium viscosum (2)
Pseudogynoxys chenopodioides (11)
Pseudolachnostylis maprouneifolia (14)
Pseudolaingia hancockii (1)
Pseudolarix amabilis (5)
Pseudoleskeella serpentinensis (10)
Pseudolithos cubiformis (1)
Pseudolithos dodsonianus (1)
Pseudolithos migiurtinus (5)
Pseudolysimachion barrelieri ssp. barrelieri (13)
Pseudomiltemia filisepala (1)
Pseudonoseris glandulosa (11)
Pseudopanax crassifolium (2)
Pseudopanax crassifolius (1)
Pseudopanax laetum (1)
Pseudopanax lessonii (2)
Pseudorchis albida (26)
Pseudoroegneria spicata (10)
Pseudoroegneria spicata ssp. spicata (4)
Pseudorontium cyathiferum (61)
Pseudotrillium rivale (36)
Pseudotsuga macrocarpa (60)
Pseudotsuga menziesii (80)
Pseudotsuga menziesii var. glauca (92)
Pseudotsuga menziesii var. menziesii (81)
Pseudotsuga sinensis var. sinensis (8)
Pseudoturritis turrita (9)
Psidium cattleianum (10)
Psidium cattleyanum (2)
Psidium guajava (15)
Psidium guava (1)
Psidium guineense (1)
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 (66)
Psilocereus azureus (1)
Psilostrophe cooperi (99)
Psilostrophe gnaphalodes (8)
Psilostrophe sparsiflora (9)
Psilostrophe tagetina (9)
Psilostrophe villosa (20)
Psilotum complanatum (21)
Psilotum nudum (14)
Psittacanthus calyculatus (1)
Psittacanthus sonorae (23)
Psoralea aculeata (1)
Psoralea lanceolatum (2)
Psoralea pinnata (9)
Psoralea thomii (2)
Psorothamnus arborescens (26)
Psorothamnus arborescens var. arborescens (41)
Psorothamnus arborescens var. californicus (6)
Psorothamnus arborescens var. minutifolius (72)
Psorothamnus emoryi (88)
Psorothamnus fremontii (27)
Psorothamnus fremontii var. attenuatus (6)
Psorothamnus fremontii var. fremontii (46)
Psorothamnus polydenius (70)
Psorothamnus schottii (119)
Psorothamnus scoparius (23)
Psorothamnus sp. (1)
Psorothamnus spinosus (124)
Psychilis bifida (7)
Psychopsis papilio (2)
Psychotria costivenia ssp. altorum (1)
Psychotria hawaiiensis (7)
Psychotria ligustrifolia (1)
Psychotria nervosa (2)
Psychotria pedunculosa (12)
Psychropila leptosepala (7)
Psydrax livida (3)
Psydrax obovata ssp. obovata (1)
Psydrax odorata (2)
Psydrax odoratum (7)
Ptaeroxylon obliquum (3)
Ptelea crenulata (58)
Ptelea trifoliata (14)
Pterideridea parishii (1)
Pteridium aquilinum (52)
Pteridium aquilinum var. decompositum (3)
Pteridium aquilinum var. pubescens (33)
Pteridium esculentum (1)
Pteridium latiusculum (1)
Pteridium pubescens (17)
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 quadriaurita (3)
Pteris sp. (2)
Pteris transparens (1)
Pteris tripartita (6)
Pteris venezuelensis (1)
Pteris vittata (3)
Pteris websteri (1)
Pteris werneri (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)
Pteronia divaricata (1)
Pterophylla parviflora (4)
Pterophylla racemosa (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 platybasis (1)
Ptisana salicina (14)
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 (9)
Pueraria montana (4)
Pueraria montana var. lobata (3)
Pulicaria dysenterica ssp. uliginosa (8)
Pulicaria odora (4)
Pulicaria paludosa (26)
Pulmonaria australis (10)
Pulmonaria cesatiana (2)
Pulmonaria obscura (1)
Pulmonaria officinalis (6)
Pulmonaria saccharata (1)
Pulmonaria sp. (6)
Pulsatilla alba (5)
Pulsatilla albana (2)
Pulsatilla alpina (6)
Pulsatilla alpina ssp. alpina (3)
Pulsatilla armena (1)
Pulsatilla cernua (13)
Pulsatilla grandis (1)
Pulsatilla halleri ssp. slavica (1)
Pulsatilla montana (11)
Pulsatilla multiceps (3)
Pulsatilla occidentalis (77)
Pulsatilla patens (54)
Pulsatilla patens ssp. multifida (31)
Pulsatilla rubra (24)
Pulsatilla vernalis (5)
Pulsatilla vulgaris (33)
Pulsatilla x ochroleuca (1)
Pultenaea juniperina (1)
Pultenaea stipularis (3)
Punica granatum (59)
Punica granatum var. nana (3)
Purshia glandulosa (2)
Purshia mexicana (10)
Purshia stabsburyana (3)
Purshia stansburiana (17)
Purshia stansburyana (101)
Purshia subintegra (4)
Purshia tridentata (82)
Purshia tridentata var. glandulosa (48)
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)
Pycnosorus globosus (8)
Pygmaeocereus bylesianus (3)
Pyracantha angustifolia (8)
Pyracantha coccinea (18)
Pyracantha crenatiserrata (1)
Pyracantha crenulata (5)
Pyracantha fortuneana (4)
Pyracantha koidzumii (9)
Pyracantha sp. (18)
Pyrethropsis hosmariense (1)
Pyrola aphylla (42)
Pyrola asarifolia (37)
Pyrola asarifolia ssp. asarifolia (60)
Pyrola asarifolia ssp. bracteata (1)
Pyrola chlorantha (10)
Pyrola crypta (3)
Pyrola dentata (62)
Pyrola elliptica (22)
Pyrola grandiflora (3)
Pyrola minor (31)
Pyrola picta (108)
Pyrola rotundifolia (6)
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 angustata (1)
Pyrrosia drakeana (3)
Pyrrosia lanceolata (2)
Pyrrosia lingua (9)
Pyrrosia polydactyla (3)
Pyrrosia princeps (1)
Pyrrosia serpens (7)
Pyrus betulifolia (11)
Pyrus calleryana (45)
Pyrus calleryana var. calleryana (8)
Pyrus calleyerana (5)
Pyrus communis (26)
Pyrus communis ssp. communis (7)
Pyrus communis var. (3)
Pyrus communis x pyrus pyrifolia (1)
Pyrus cordata (7)
Pyrus kawakami (13)
Pyrus melanocarpa (1)
Pyrus pashia (10)
Pyrus pyrifolia (20)
Pyrus salicifolia (4)
Pyrus sp. (4)
Pyrus spinosa (15)
Pyrus ussuriensis (15)
Pyrus x bretschneideri (1)
Pyxidanthera barbulata (4)