Species with Images

This page provides a complete list to taxa that have images. Use the controls below to browse and search for images by family, genus, or species.
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Pachycereus marginatus
Pachycereus pecten-aboriginum
Pachycereus pringlei
Pachycereus schottii
Pachycereus schottii var. schottii
Pachycormus discolor
Pachypodium saundersii
Pachyrhizus erosus
Pachysandra procumbens
Pachysandra terminalis
Pachystachys coccinea
Pachystachys lutea
Packera anonyma
Packera aurea
Packera cana
Packera cardamine
Packera cynthioides
Packera fendleri
Packera franciscana
Packera glabella
Packera hartiana
Packera indecora
Packera malmstenii
Packera millelobata
Packera multilobata
Packera neomexicana
Packera neomexicana var. metcalfei
Packera neomexicana var. mutabilis
Packera neomexicana var. neomexicana
Packera neomexicana var. toumeyi
Packera obovata
Packera paupercula
Packera plattensis
Packera quercetorum
Packera streptanthifolia
Packera werneriifolia
Paeonia brownii
Paeonia californica
Palafoxia arida
Palafoxia sphacelata
Pallenis spinosa
Panicum alatum var. minus
Panicum amarum
Panicum antidotale
Panicum barbinode
Panicum boliviense
Panicum bulbosum
Panicum capillare
Panicum capillare subsp. capillare
Panicum coloratum
Panicum dichotomiflorum
Panicum flexile
Panicum hallii
Panicum hirticaule
Panicum hirticaule var. hirticaule
Panicum jubiflorum
Panicum laxum
Panicum miliaceum
Panicum mohavense
Panicum obtusum
Panicum philadelphicum
Panicum repens
Panicum sonorum
Panicum trichoides
Panicum virgatum
Papaver californicum
Papaver dubium
Papaver nudicaule
Papaver orientale
Papaver radicatum
Papaver rhoeas
Papaver somniferum
Papaya carica
Pappophorum bicolor
Pappophorum vaginatum
Pappostipa speciosa
Paraserianthes lophantha
Parietaria floridana
Parietaria hespera
Parietaria hespera var. hespera
Parietaria pensylvanica
Parkinsonia aculeata
Parkinsonia florida
Parkinsonia microphylla
Parkinsonia praecox
Parnassia californica
Parnassia fimbriata
Parnassia glauca
Parnassia palustris
Paronychia canadensis
Paronychia jamesii
Paronychia pulvinata
Paronychia sessiliflora
Parosela mollis
Parosela spinosa
Parosela wheeleri
Parryella filifolia
Parthenice mollis
Parthenium argentatum
Parthenium confertum
Parthenium confertum var. lyratum
Parthenium hysterophorus
Parthenium incanum
Parthenium integrifolium
Parthenocissus inserta
Parthenocissus quinquefolia
Parthenocissus tricuspidata
Parthenocissus vitacea
Pascopyrum smithii
Paspalidium philippianum
Paspalidium retiglume
Paspalum botterii
Paspalum conjugatum
Paspalum convexum
Paspalum dilatatum
Paspalum distichum
Paspalum hartwegianum
Paspalum notatum
Paspalum paniculatum
Paspalum plicatulum
Paspalum setaceum
Paspalum urvillei
Paspalum vaginatum
Paspalum virletii
Passiflora X belotii
Passiflora arbelaezii
Passiflora arida
Passiflora arizonica
Passiflora biflora
Passiflora caerulea
Passiflora coccinea
Passiflora foetida
Passiflora incarnata
Passiflora ligularis
Passiflora lobata
Passiflora lutea
Passiflora mexicana
Passiflora obovata
Passiflora palmeri
Passiflora suberosa
Passiflora subpeltata
Passiflora tenuiloba
Passiflora vitifolia
Pastinaca sativa
Paullinia cururu
Paulownia tomentosa
Paxistima myrsinites
Pearcea hypocyrtiflora
Pectis angustifolia
Pectis angustifolia var. angustifolia
Pectis angustifolia var. tenella
Pectis cylindrica
Pectis filipes
Pectis filipes var. filipes
Pectis imberbis
Pectis linifolia
Pectis longipes
Pectis papposa
Pectis prostrata
Pectis rusbyi
Pectocarya heterocarpa
Pectocarya penicillata
Pectocarya peninsularis
Pectocarya platycarpa
Pectocarya pusilla
Pectocarya recurvata
Pectocarya setosa
Pedicularis attollens
Pedicularis bracteosa
Pedicularis canadensis
Pedicularis centranthera
Pedicularis contorta
Pedicularis crenulata
Pedicularis densiflora
Pedicularis groenlandica
Pedicularis lanceolata
Pedicularis parryi
Pedicularis parryi subsp. mogollonica
Pedicularis parryi subsp. parryi
Pedicularis procera
Pedicularis racemosa
Pedicularis semibarbata
Pedilanthus bracteatus
Pedilanthus macrocarpus
Pediocactus bradyi
Pediocactus despainii
Pediocactus knowltonii
Pediocactus paradinei
Pediocactus peeblesianus var. fickeiseniae
Pediocactus peeblesianus var. peeblesianus
Pediocactus sileri
Pediocactus simpsonii
Pediocactus simpsonii var. minor
Pediocactus winkleri
Pediomelum aromaticum
Pediomelum castoreum
Pediomelum esculentum
Pediomelum megalanthum
Pediomelum megalanthum var. megalanthum
Pediomelum mephiticum
Pediomelum palmeri
Pediomelum pauperitense
Pediomelum pentaphyllum
Pediomelum retrorsum
Pediomelum tenuiflorum
Pediomelum verdiense
Peganum harmala
Pelargonium crispum
Pelargonium graveolens
Pellaea atropurpurea
Pellaea brachyptera
Pellaea breweri
Pellaea bridgesii
Pellaea glabella
Pellaea glabella subsp. simplex
Pellaea intermedia
Pellaea lyngholmii
Pellaea mucronata
Pellaea mucronata subsp. mucronata
Pellaea ovata
Pellaea ternifolia
Pellaea ternifolia subsp. arizonica
Pellaea truncata
Pellaea wrightiana
Peltandra virginica
Peniocereus greggii
Peniocereus greggii var. greggii
Peniocereus greggii var. transmontanus
Peniocereus johnstonii
Peniocereus marianus
Peniocereus striatus
Peniocereus viperinus
Pennellia longifolia
Pennellia micrantha
Pennellia tricornuta
Pennisetum alopecuroides
Pennisetum ciliare
Pennisetum clandestinum
Pennisetum flaccidum
Pennisetum glaucum
Pennisetum polystachion
Pennisetum purpureum
Pennisetum setaceum
Pennisetum villosum
Penstemon acuminatus
Penstemon alamosensis
Penstemon albidus
Penstemon albomarginatus
Penstemon ambiguus
Penstemon angustifolius
Penstemon atwoodii
Penstemon baccharifolius
Penstemon barbatus
Penstemon barbatus subsp. barbatus
Penstemon barbatus subsp. torreyi
Penstemon bicolor
Penstemon bracteatus
Penstemon breviculus
Penstemon buckleyi
Penstemon caespitosus
Penstemon caespitosus var. desertipicti
Penstemon caespitosus var. perbrevis
Penstemon calycosus
Penstemon campanulatus
Penstemon cardinalis subsp. cardinalis
Penstemon cardwellii
Penstemon carnosus
Penstemon centranthifolius
Penstemon cinicola
Penstemon clevelandii
Penstemon clutei
Penstemon cobaea
Penstemon comarrhenus
Penstemon confusus
Penstemon cyananthus
Penstemon cyananthus var. cyananthus
Penstemon cyaneus
Penstemon dasyphyllus
Penstemon davidsonii
Penstemon deustus
Penstemon digitalis
Penstemon discolor
Penstemon duchesnensis
Penstemon eatonii
Penstemon fasciculatus
Penstemon fendleri
Penstemon flowersii
Penstemon fruticiformis
Penstemon glaber
Penstemon gracilis
Penstemon grahamii
Penstemon grandiflorus
Penstemon griffinii
Penstemon grinnellii var. scrophularioides
Penstemon haydenii
Penstemon heterodoxus
Penstemon higginsii
Penstemon humilis
Penstemon humilis var. brevifolius
Penstemon humilis var. obtusifolius
Penstemon inflatus
Penstemon jamesii
Penstemon kunthii
Penstemon laetus
Penstemon laevis
Penstemon leiophyllus var. leiophyllus
Penstemon lentus
Penstemon lentus var. lentus
Penstemon leonardii
Penstemon linarioides
Penstemon linarioides subsp. coloradoensis
Penstemon metcalfei
Penstemon miniatus
Penstemon neomexicanus
Penstemon newberryi
Penstemon nudiflorus
Penstemon oliganthus
Penstemon ophianthus
Penstemon pachyphyllus
Penstemon pachyphyllus var. pachyphyllus
Penstemon palmeri
Penstemon parryi
Penstemon petiolatus
Penstemon pinifolius
Penstemon pinorum
Penstemon platyphyllus
Penstemon procerus
Penstemon pseudoputus
Penstemon pseudospectabilis
Penstemon pseudospectabilis subsp. connatifolius
Penstemon ramosus
Penstemon roezlii
Penstemon rostriflorus
Penstemon rydbergii
Penstemon scariosus var. albifluvis
Penstemon secundiflorus
Penstemon sepalulus
Penstemon speciosus
Penstemon spectabilis
Penstemon stenophyllus
Penstemon strictus
Penstemon subulatus
Penstemon superbus
Penstemon thompsoniae
Penstemon thurberi
Penstemon triflorus
Penstemon unilateralis
Penstemon utahensis
Penstemon venustus
Penstemon virgatus
Penstemon watsonii
Penstemon whippleanus
Pentaclethra macroloba
Pentagramma triangularis
Pentagramma triangularis subsp. maxonii
Pentagramma triangularis subsp. triangularis
Pentas lanceolata
Penthorum sedoides
Pentzia incana
Peperomia tetraphylla
Peraphyllum ramosissimum
Pereskia aculeata
Pereskia sacharosa
Pericome caudata
Perideridia bolanderi
Perideridia gairdneri
Perideridia howellii
Perideridia lemmonii
Perideridia parishii
Perilla frutescens
Peritoma arborea
Peritoma jonesii
Peritoma lutea
Peritoma serrulata
Perityle californica
Perityle cernua
Perityle ciliata
Perityle cochisensis
Perityle congesta
Perityle coronopifolia
Perityle emoryi
Perityle gentryi
Perityle gilensis
Perityle gracilis
Perityle lemmonii
Perityle leptoglossa
Perityle lobata
Perityle quinqueflora
Perityle saxicola
Perityle staurophylla var. staurophylla
Perityle tenella
Pernettya prostrata
Perovskia atriplicifolia
Perrottetia longistylis
Persea americana
Persicaria amphibia
Persicaria arifolia
Persicaria careyi
Persicaria hydropiperoides
Persicaria lapathifolia
Persicaria maculosa
Persicaria minor
Persicaria pensylvanica
Persicaria sagittata
Persicaria virginiana
Petalonyx linearis
Petalonyx nitidus
Petalonyx parryi
Petalonyx thurberi
Petalostemon candidum
Petalostemon purpureum
Petalostemon standleyanus
Petalostemon violaceum
Peteria scoparia
Peteria thompsoniae
Petiveria alliacea
Petradoria pumila
Petradoria pumila subsp. graminea
Petrea volubilis
Petrophyton caespitosum
Petrophytum caespitosum
Petrorhagia dubia
Petunia x atkinsiana
Peucephyllum schottii
Phacelia affinis
Phacelia alba
Phacelia ambigua
Phacelia anelsonii
Phacelia argillacea
Phacelia arizonica
Phacelia bipinnatifida
Phacelia bombycina
Phacelia buell-vivariensis
Phacelia caerulea
Phacelia californica
Phacelia calthifolia
Phacelia campanularia
Phacelia campanularia subsp. vasiformis
Phacelia cicutaria
Phacelia cloudcroftensis
Phacelia coerulea
Phacelia congesta
Phacelia constancei
Phacelia crenulata
Phacelia crenulata var. ambigua
Phacelia crenulata var. angustifolia
Phacelia crenulata var. corrugata
Phacelia cryptantha
Phacelia curvipes
Phacelia demissa
Phacelia distans
Phacelia fremontii
Phacelia hastata
Phacelia hastata var. hastata
Phacelia heterophylla
Phacelia howelliana
Phacelia humilis
Phacelia hydrophylloides
Phacelia integrifolia
Phacelia integrifolia var. integrifolia
Phacelia ivesiana
Phacelia ivesiana var. ivesiana
Phacelia lemmonii
Phacelia magellanica
Phacelia malvifolia
Phacelia neglecta
Phacelia neomexicana
Phacelia palmeri
Phacelia parryi
Phacelia pedicellata
Phacelia popei
Phacelia pulchella
Phacelia pulchella var. atwoodii
Phacelia purshii
Phacelia rafaelensis
Phacelia ramosissima
Phacelia rotundifolia
Phacelia rupestris
Phacelia sabulonum
Phacelia saxicola
Phacelia scopulina
Phacelia sericea
Phacelia serrata
Phacelia sivinskii
Phacelia tanacetifolia
Phacelia vallis-mortae
Phacelia welshii
Phalaris aquatica
Phalaris arundinacea
Phalaris canariensis
Phalaris caroliniana
Phalaris minor
Phalaris paradoxa
Phanerophlebia auriculata
Phaseolus acutifolius
Phaseolus acutifolius var. latifolius
Phaseolus angustissimus
Phaseolus coccineus
Phaseolus filiformis
Phaseolus gentryi
Phaseolus grayanus
Phaseolus griseus
Phaseolus leiosepalus
Phaseolus lunatus
Phaseolus maculatus
Phaseolus ovatifolius
Phaseolus parvulus
Phaseolus pauciflorus
Phaseolus pedicellatus var. grayanus
Phaseolus ritensis
Phaseolus supinus
Phaseolus vulgaris
Phaulothamnus spinescens
Phegopteris hexagonoptera
Phellodendron amurense
Phemeranthus aurantiacus
Phemeranthus brevicaulis
Phemeranthus brevifolius
Phemeranthus humilis
Phemeranthus marginatus
Phemeranthus parviflorus
Phemeranthus validulus
Phenax hirtus
Philadelphus argenteus
Philadelphus argyrocalyx
Philadelphus coronarius
Philadelphus crinitus
Philadelphus floridus
Philadelphus hirsutus
Philadelphus lewisii
Philadelphus madrensis
Philadelphus microphyllus
Philadelphus occidentalis
Philadelphus palmeri
Philadelphus pubescens
Philodendron selloum
Phleum alpinum
Phleum paniculatum
Phleum pratense
Phlomis fruticosa
Phlox adsurgens
Phlox austromontana
Phlox austromontana subsp. austromontana
Phlox bifida subsp. bifida
Phlox caespitosa
Phlox condensata
Phlox diffusa
Phlox diffusa subsp. subcarinata
Phlox divaricata
Phlox divaricata subsp. laphamii
Phlox glaberrima subsp. interior
Phlox gracilis
Phlox griseola
Phlox hoodii
Phlox hoodii subsp. canescens
Phlox hoodii subsp. lanata
Phlox longifolia
Phlox maculata
Phlox multiflora
Phlox muscoides
Phlox nana
Phlox paniculata
Phlox pilosa
Phlox pilosa subsp. fulgida
Phlox pulvinata
Phlox speciosa
Phlox speciosa subsp. woodhousei
Phlox stansburyi
Phlox subulata
Phlox tenuifolia
Phlox triovulata
Phlox viscida
Phoenicaulis cheiranthoides
Phoenix canariensis
Phoenix dactylifera
Phoenix reclinata
Phoenix roebelenii
Pholisma arenarium
Pholisma sonorae
Pholistoma auritum
Pholistoma membranaceum
Phoradendron bolleanum
Phoradendron brachystachyum
Phoradendron californicum
Phoradendron capitellatum
Phoradendron coryae
Phoradendron juniperinum
Phoradendron leucarpum
Phoradendron serotinum
Phoradendron serotinum subsp. macrophyllum
Phoradendron villosum
Photinia pyrifolia
Phragmites australis
Phragmites australis subsp. americanus
Phragmites australis subsp. australis
Phragmites australis subsp. berlandieri
Phrygilanthus aphyllus
Phrygilanthus sonorae
Phryma leptostachya
Phyla cuneifolia
Phyla lanceolata
Phyla nodiflora
Phyllanthus polygonoides
Phyllodoce breweri
Phyllodoce empetriformis
Physalis acutifolia
Physalis angulata
Physalis caudella
Physalis chenopodifolia
Physalis crassifolia
Physalis crassifolia var. crassifolia
Physalis crassifolia var. infundibularis
Physalis hederaefolia
Physalis hederifolia
Physalis hederifolia var. fendleri
Physalis heterophylla
Physalis hispida
Physalis lobata
Physalis longifolia
Physalis longifolia var. longifolia
Physalis longifolia var. subglabrata
Physalis minima
Physalis neomexicana
Physalis peruviana
Physalis philadelphica
Physalis pubescens
Physalis purpurea
Physalis subulata var. neomexicana
Physalis virginiana
Physalis viscosa
Physaria acutifolia
Physaria arizonica
Physaria bellii
Physaria chambersii
Physaria cinerea
Physaria eburniflora
Physaria fendleri
Physaria gooddingii
Physaria gordonii
Physaria kingii
Physaria kingii subsp. kingii
Physaria navajoensis
Physaria newberryi
Physaria pinetorum
Physaria purpurea
Physaria subumbellata
Physaria tenella
Physaria tumulosa
Physaria utahensis
Physaria vitulifera
Physocarpus capitatus
Physocarpus malvaceus
Physocarpus monogynus
Physocarpus opulifolius
Physostegia virginiana
Phytolacca acinosa
Phytolacca americana
Phytolacca icosandra
Phytolacca octandra
Phytolacca rivinoides
Picea engelmannii
Picea engelmannii var. engelmannii
Picea glauca
Picea pungens
Pickeringia montana
Picradeniopsis oppositifolia
Picradeniopsis woodhousei
Picris echioides
Picrothamnus desertorum
Pictetia microphylla
Pilea dauciodora
Pilea fontana
Pilea microphylla
Pilea pumila
Pilosocereus alensis
Pilosocereus leucocephalus
Pilostyles thurberi
Pimenta racemosa
Pinaropappus roseus
Pinguicula caudata
Pinguicula ionantha
Pinguicula moranensis
Pinus albicaulis
Pinus aristata
Pinus banksiana
Pinus canariensis
Pinus cembroides
Pinus clausa
Pinus echinata
Pinus edulis
Pinus eldarica
Pinus flexilis
Pinus greggii
Pinus halepensis
Pinus hartwegii
Pinus herrerae
Pinus jeffreyi
Pinus lambertiana
Pinus leiophylla
Pinus leiophylla var. chihuahuana
Pinus longaeva
Pinus lumholtzii
Pinus lutea
Pinus monophylla
Pinus montezumae
Pinus monticola
Pinus muricata
Pinus murrayana
Pinus oocarpa
Pinus palustris
Pinus patula
Pinus pinceana
Pinus pinea
Pinus ponderosa
Pinus ponderosa var. scopulorum
Pinus pungens
Pinus quadrifolia
Pinus remota
Pinus resinosa
Pinus rigida
Pinus serotina
Pinus strobiformis
Pinus strobus
Pinus sylvestris
Pinus taeda
Pinus teocote
Pinus torreyana
Pinus virginiana
Piper auritum
Piper biseriatum
Piper hispidum
Piper pittieri
Piper polytrichum
Piper reticulatum
Piperia transversa
Piperia unalascensis
Piptatherum exiguum
Piptatherum micranthum
Piptatherum miliaceum
Piptochaetium fimbriatum
Piptochaetium pringlei
Piscidia piscipula
Pisonia aculeata
Pisonia capitata
Pistacia atlantica
Pistacia chinensis
Pistacia lentiscus
Pistacia terebinthus
Pistia stratiotes
Pisum sativum
Pithecellobium dulce
Pithecellobium unguis-cati
Pithecoctenium cynanchoides
Pittosporum rhombifolium
Pittosporum tobira
Pittosporum undulatum
Pityrogramma calomelanos
Pityrogramma ebenea
Plagiobothrys acanthocarpus
Plagiobothrys arizonicus
Plagiobothrys collinus
Plagiobothrys jonesii
Plagiobothrys nothofulvus
Plagiobothrys salsus
Plagiobothrys scouleri
Plagiobothrys tenellus
Plantago argyraea
Plantago aristata
Plantago australis
Plantago bigelovii
Plantago cordata
Plantago elongata
Plantago erecta
Plantago eriopoda
Plantago helleri
Plantago heterophylla
Plantago lanceolata
Plantago major
Plantago maritima
Plantago ovata
Plantago patagonica
Plantago psyllium
Plantago rhodosperma
Plantago tweedyi
Plantago virginica
Plantago wrightiana
Platanthera aquilonis
Platanthera brevifolia
Platanthera ciliaris
Platanthera clavellata
Platanthera dilatata
Platanthera flava var. herbiola
Platanthera hookeri
Platanthera huronensis
Platanthera hyperborea
Platanthera lacera
Platanthera leucophaea
Platanthera limosa
Platanthera orbiculata
Platanthera peramoena
Platanthera psycodes
Platanthera sparsiflora
Platanthera stricta
Platanthera tescamnis
Platanthera zothecina
Platanus hybrida
Platanus occidentalis
Platanus racemosa
Platanus wrightii
Platycodon grandiflorus
Platyschkuhria integrifolia var. oblongifolia
Platystemon californicus
Plectocephalus americanus
Plectocephalus rothrockii
Plectritis ciliosa
Plectritis macrocera
Pleiacanthus spinosus
Pleopeltis polylepis var. erythrolepis
Pleopeltis riograndensis
Pleopeltis thyssanolepis
Pleuraphis jamesii
Pleuraphis mutica
Pleurocoronis laphamioides
Pleurocoronis pluriseta
Pleuropetalum sprucei
Plocosperma buxifolium
Pluchea baccharis
Pluchea camphorata
Pluchea foetida
Pluchea odorata
Pluchea salicifolia
Pluchea sericea
Plumbago auriculata
Plumbago scandens
Plumeria alba
Plumeria obtusa
Plumeria rubra
Poa alpina
Poa annua
Poa bigelovii
Poa bulbosa
Poa chambersii
Poa compressa
Poa fendleriana
Poa glauca
Poa leptocoma
Poa nemoralis
Poa nemoralis subsp. interior
Poa occidentalis
Poa palustris
Poa pratensis
Poa reflexa
Poa secunda
Poa tracyi
Poa trivialis
Podistera eastwoodiae
Podocarpus gracilior
Podophyllum peltatum
Pogonia ophioglossoides
Polanisia dodecandra
Polanisia dodecandra subsp. trachysperma
Polemonium brandegeei
Polemonium californicum
Polemonium confertum
Polemonium flavum
Polemonium foliosissimum
Polemonium foliosissimum var. foliosissimum
Polemonium occidentale
Polemonium pauciflorum
Polemonium pulcherrimum
Polemonium pulcherrimum subsp. delicatum
Polemonium pulcherrimum var. pilosum
Polemonium reptans
Polemonium viscosum
Poliomintha incana
Polygala acanthoclada
Polygala alba
Polygala apopetala
Polygala barbeyana
Polygala californica
Polygala cruciata
Polygala intermontana
Polygala lindheimeri var. parvifolia
Polygala macradenia
Polygala obscura
Polygala piliophora
Polygala polygama
Polygala rusbyi
Polygala sanguinea
Polygala scoparioides
Polygala subspinosa
Polygala tenuiloba
Polygonatum biflorum
Polygonatum cobrense
Polygonatum pubescens
Polygonum amphibium
Polygonum arenastrum
Polygonum argyrocoleon
Polygonum aviculare
Polygonum aviculare subsp. depressum
Polygonum bistortoides
Polygonum buxiforme
Polygonum convolvulus
Polygonum davisiae
Polygonum douglasii
Polygonum douglasii subsp. johnstonii
Polygonum equisetiforme
Polygonum lapathifolium
Polygonum minimum
Polygonum patulum
Polygonum pensylvanicum
Polygonum persicaria
Polygonum polygaloides
Polygonum punctatum
Polygonum shastense
Polylepis besseri
Polymnia canadensis
Polypodium californicum
Polypodium glycyrrhiza
Polypodium hesperium
Polypodium percussum
Polypogon australis
Polypogon elongatus
Polypogon interruptus
Polypogon maritimus
Polypogon monspeliensis
Polypogon viridis
Polypremum procumbens
Polystichum acrostichoides
Polystichum kruckebergii
Polystichum lemmonii
Polystichum lonchitis
Polystichum munitum
Polystichum scopulinum
Polytaenia nuttallii
Pomaria jamesii
Pontederia cordata
Populus alba
Populus angustifolia
Populus balsamifera
Populus deltoides
Populus deltoides subsp. wislizeni
Populus fremontii
Populus fremontii subsp. fremontii
Populus grandidentata
Populus heterophylla
Populus nigra
Populus tremuloides
Populus trichocarpa
Populus x hinckleyana
Porlieria chilensis
Porophyllum crassifolium
Porophyllum gracile
Porophyllum ruderale
Porophyllum ruderale subsp. macrocephalum
Porophyllum scoparium
Porterella carnosula
Portulaca grandiflora
Portulaca halimoides
Portulaca oleracea
Portulaca pilosa
Portulaca suffrutescens
Portulaca umbraticola
Portulaca yecorensis
Portulacaria afra
Potamogeton X spathuliformis
Potamogeton alpinus
Potamogeton amplifolius
Potamogeton crispus
Potamogeton diversifolius
Potamogeton foliosus
Potamogeton gramineus
Potamogeton illinoensis
Potamogeton natans
Potamogeton nodosus
Potamogeton praelongus
Potamogeton pusillus
Potamogeton richardsonii
Potentilla albiflora
Potentilla argentea
Potentilla arguta
Potentilla arizonica
Potentilla basaltica
Potentilla biennis
Potentilla concinna
Potentilla crinita
Potentilla fissa
Potentilla flabellifolia
Potentilla fruticosa
Potentilla glandulosa
Potentilla gracilis
Potentilla gracilis var. fastigiata
Potentilla gracilis var. pulcherrima
Potentilla hippiana
Potentilla hippiana var. hippiana
Potentilla nivea
Potentilla norvegica
Potentilla pectinisecta
Potentilla pensylvanica
Potentilla pensylvanica var. pensylvanica
Potentilla plattensis
Potentilla recta
Potentilla rivalis
Potentilla rubida
Potentilla sanguinea
Potentilla simplex
Potentilla thurberi
Potentilla wheeleri
Pothomorphe peltata
Pouteria campechiana
Pouteria sapota
Prenanthella exigua
Prenanthes alba
Prenanthes altissima
Prenanthes aspera
Prenanthes racemosa
Prestonia mexicana
Primula angustifolia
Primula cusickiana var. maguirei
Primula malacoides
Primula meadia
Primula parryi
Primula rusbyi
Primula specuicola
Primula suffrutescens
Proboscidea althaeifolia
Proboscidea louisianica
Proboscidea parviflora
Proboscidea sabulosa
Prosartes hookeri
Prosartes lanuginosa
Proserpinaca palustris
Proserpinaca pectinata
Prosopis alba
Prosopis chilensis
Prosopis denudans
Prosopis glandulosa
Prosopis glandulosa var. torreyana
Prosopis juliflora
Prosopis juliflora var. torreyana
Prosopis palmeri
Prosopis pubescens
Prosopis reptans
Prosopis velutina
Protium glabrum
Prunella vulgaris
Prunella vulgaris subsp. lanceolata
Prunus americana
Prunus andersonii
Prunus angustifolia
Prunus armeniaca
Prunus avium
Prunus caroliniana
Prunus cerasifera
Prunus cerasus
Prunus domestica
Prunus dulcis
Prunus emarginata
Prunus fasciculata
Prunus fremontii
Prunus gracilis
Prunus ilicifolia
Prunus mahaleb
Prunus mume
Prunus persica
Prunus pumila
Prunus serotina
Prunus serotina var. virens
Prunus tomentosa
Prunus umbellata
Prunus virginiana
Prunus virginiana var. melanocarpa
Psacalium decompositum
Psathyrostachys juncea
Psathyrotes annua
Psathyrotes pilifera
Psathyrotes ramosissima
Psathyrotopsis scaposa
Pseudabutilon thurberi
Pseuderanthemum variabile
Pseudobombax ellipticum
Pseudoclappia arenaria
Pseudocymopterus longiradiatus
Pseudocymopterus montanus
Pseudognaphalium californicum
Pseudognaphalium canescens
Pseudognaphalium leucocephalum
Pseudognaphalium luteoalbum
Pseudognaphalium macounii
Pseudognaphalium obtusifolium
Pseudognaphalium stramineum
Pseudogynoxys chenopodioides
Pseudolithos migiurtinus
Pseudoroegneria spicata
Pseudorontium cyathiferum
Pseudostellaria jamesiana
Pseudotsuga menziesii
Pseudotsuga menziesii var. glauca
Psidium amplexicaule
Psidium appendiculatum
Psidium australe var. argenteum
Psidium australe var. australe
Psidium australe var. suffruticosum
Psidium bahianum
Psidium cattleianum
Psidium cattleyanum
Psidium cauliflorum
Psidium friedrichsthalianum
Psidium fulvum
Psidium glaziovianum
Psidium grandifolium
Psidium guajava
Psidium guineense
Psidium laruotteanum
Psidium littorale
Psidium maribense
Psidium missionum
Psidium occidentale
Psidium oligospermum
Psidium pedicellatum
Psidium rostratum
Psidium rutidocarpum
Psidium salutare var. decussatum
Psidium salutare var. mucronatum
Psidium salutare var. pohlianum
Psidium salutare var. salutare
Psidium salutare var. sericeum
Psidium sartorianum
Psidium schenckianum
Psidium sobralianum
Psilactis brevilingulata
Psilocarphus brevissimus
Psilocarphus oregonus
Psilostrophe cooperi
Psilostrophe sparsiflora
Psilostrophe tagetina
Psilotum nudum
Psittacanthus macrantherus
Psoralidium junceum
Psoralidium lanceolatum
Psoralidium tenuiflorum
Psorothamnus arborescens
Psorothamnus arborescens var. pubescens
Psorothamnus emoryi
Psorothamnus fremontii
Psorothamnus polydenius
Psorothamnus schottii
Psorothamnus scoparius
Psorothamnus spinosus
Psorothamnus thompsonae
Psorothamnus thompsoniae
Psorothamnus thompsoniae var. thompsoniae
Psychotria elata
Ptelea trifoliata
Pteridium aquilinum
Pteridium arachnoideum
Pteris cretica
Pteris plumula
Pterospora andromedea
Pterostegia drymarioides
Pterygoneurum ovatum
Pteryxia davidsonii
Pteryxia petraea
Puccinellia distans
Puccinellia fasciculata
Puccinellia nuttalliana
Puccinellia parishii
Pueraria montana
Pulicaria dysenterica
Pulicaria paludosa
Pulsatilla occidentalis
Pulsatilla patens
Punica granatum
Purshia X subintegra
Purshia glandulosa
Purshia mexicana
Purshia stansburiana
Purshia stansburyana
Purshia tridentata
Puya chilensis
Pycnanthemum virginianum
Pyracantha angustifolia
Pyracantha coccinea
Pyracantha koidzumii
Pyrola asarifolia
Pyrola chlorantha
Pyrola dentata
Pyrola elliptica
Pyrola minor
Pyrola picta
Pyrostegia venusta
Pyrrhopappus carolinianus
Pyrrhopappus pauciflorus
Pyrrocoma carthamoides
Pyrrocoma crocea
Pyrrocoma lanceolata
Pyrrocoma racemosa
Pyrrocoma uniflora
Pyrus calleryana
Pyrus communis
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