Introduced Plants of the U.S. Click on an accepted name below to view its Plant Profile with all synonyms, distribution map, more information, and web links if available.

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Symbol Scientific Name Common Name PAIN7 Pachira insignis (Sw.) Sw. ex Savigny wild chestnut PATE11 Pachysandra terminalis Sieb. & Zucc. Japanese pachysandra PASP17 Pachystachys spicata (Ruiz & Pavón) Wasshausen PACR15 Paederia cruddasiana Prain sewer vine PAFO3 Paederia foetida L. stinkvine PALA27 Paeonia lactiflora Pallas Chinese peony PAOF2 Paeonia officinalis L. common peony PASP16 Paliurus spina-christi P. Mill. Jeruselem thorn PATE2 Pandanus tectorius Parkinson ex Zucc. Tahitian screwpine PAUT Pandanus utilis Bory common screwpine PAVE6 Pandanus veitchii hort. Veitch ex Masters & T. Moore Veitch's screwpine PAAN4 Panicum antidotale Retz. blue panicum PABE4 Panicum bergii Arech. Berg's panicgrass† PABI80 Panicum bisulcatum Thunb. Japanese panicgrass PABO7 Panicum boliviense Hack. Bolivian panicgrass PACO2 Panicum coloratum L. klinegrass PAMI2 Panicum miliaceum L. broomcorn millet PAMIM Panicum miliaceum L. ssp. miliaceum broomcorn millet PAMIR Panicum miliaceum L. ssp. ruderale (Kitagawa) Tzvelev broomcorn millet PANA Panicum napaliense Davidse Napali panicgrass PAPA35 Panicum paludosum Roxb. Chesapeake panicgrass PAPS12 Panicum psilopodium Trin. barefoot panicgrass PAVE3 Panicum venezuelae Hack. Venezuelan panicgrass PAAR3 Papaver argemone L. long pricklyhead poppy PADU Papaver dubium L. blindeyes PAGL4 Papaver glaucum Boiss. & Hausskn. tulip poppy PAGO4 Papaver gorodkovii Tolm. & Petrovsky arctic poppy PAHY3 Papaver hybridum L. round pricklyhead poppy PAOR5 Papaver orientale L. oriental poppy PARH2 Papaver rhoeas L. corn poppy PASO2 Papaver somniferum L. opium poppy PAST11 Papaver ×strigosum (Boenn.) Schur (pro sp.) [dubium × rhoeas] PAIN Parapholis incurva (L.) C.E. Hubbard curved sicklegrass PAST20 Parapholis strigosa (Dumort.) C.E. Hubbard strigose sicklegrass PALO8 Paraserianthes lophantha (Willd.) I. Nielsen plume albizia PALA28 Parentucellia latifolia (L.) Caruel broadleaf glandweed PAVI3 Parentucellia viscosa (L.) Caruel yellow glandweed PAJU Parietaria judaica L. spreading pellitory PAOF Parietaria officinalis L. upright pellitory PAAC13 Parmentiera aculeata (Kunth) Seem. cuachilote PACE8 Parmentiera cereifera Seem. candle tree PAEC2 Paronychia echinulata Chater Eurasian nailwort PAHY Parthenium hysterophorus L. Santa Maria feverfew PATR6 Parthenocissus tricuspidata (Sieb. & Zucc.) Planch. Boston ivy PAGL9 Pascalia glauca Ortega beach creeping oxeye PADI27 Paspalidium distans (Trin.) Hughes spreading panicgrass PAPH2 Paspalidium philippianum Parodi Philippine watercrown grass PAAL7 Paspalum almum Chase Comb's crowngrass PACO15 Paspalum convexum Humb. & Bonpl. ex Flueggé Latin American crowngrass PACO80 Paspalum coryphaeum Trin. Emperor crowngrass PADI3 Paspalum dilatatum Poir. dallisgrass PAFA4 Paspalum fasciculatum Willd. ex Flueggé Mexican crowngrass PAHY2 Paspalum hydrophilum Henr. water paspalum PAIN5 Paspalum intermedium Munro ex Morong intermediate paspalum PAMA80 Paspalum macrophyllum Kunth bigleaf paspalum PAMA6 Paspalum malacophyllum Trin. ribbed paspalum PANI3 Paspalum nicorae Parodi Brunswickgrass PANO2 Paspalum notatum Flueggé bahiagrass‡ PANOL3 Paspalum notatum Flueggé var. latiflorum J. Döll bahiagrass PANOS Paspalum notatum Flueggé var. saurae Parodi bahiagrass PAPU11 Paspalum pulchellum Kunth grand paspalum PARA6 Paspalum racemosum Lam. Peruvian paspalum PASC6 Paspalum scrobiculatum L. kodomillet PAUR2 Paspalum urvillei Steud. Vasey's grass PABI5 Passiflora bicornis P. Mill. wingleaf passionflower PABI6 Passiflora biflora Lam. twoflower passionflower PACA22 Passiflora caerulea L. bluecrown passionflower PACO17 Passiflora coccinea Aubl. scarlet passionflower PAED Passiflora edulis Sims purple granadilla PAFO2 Passiflora foetida L. fetid passionflower‡ PAFOI Passiflora foetida L. var. isthmia Killip scarletfruit passionflower PAGR8 Passiflora gracilis Jacq. ex Link crinkled passionflower PALI8 Passiflora ligularis Juss. sweet granadilla PAMA15 Passiflora manicata (Juss.) Pers. red passionflower PAMO5 Passiflora mollissima (Kunth) Bailey banana passionflower PAMO6 Passiflora morifolia Masters woodland passionflower PAQU3 Passiflora quadrangularis L. giant granadilla PASU4 Passiflora subpeltata Ortega white passionflower PATU3 Passiflora tuberosa Jacq. tuberous passionflower PAVI12 Passiflora vitifolia Kunth perfumed passionflower PASA2 Pastinaca sativa L. wild parsnip PATO2 Paulownia tomentosa (Thunb.) Sieb. & Zucc. ex Steud. princesstree PAHA5 Pavonia hastata Cav. spearleaf swampmallow PEHA Peganum harmala L. harmal peganum PECA13 Pelargonium capitatum (L.) L'Hér. ex Ait. rose scented geranium PEDO2 Pelargonium ×domesticum Bailey (pro sp.) [angulosum × cucullatum] regal pelargonium PEGR11 Pelargonium graveolens L'Hér. ex Ait. sweet scented geranium PEGR12 Pelargonium grossularioides (L.) L'Hér. ex Ait. gooseberry geranium PEHO2 Pelargonium ×hortorum Bailey (pro sp.) [inquinans × zonale] zonal geranium PEIN6 Pelargonium inodorum Willd. scentless geranium PEIN7 Pelargonium inquinans (L.) L'Hér. ex Ait. scarlet geranium PEOD Pelargonium odoratissimum (L.) L'Hér. ex Ait. apple geranium PEPA52 Pelargonium panduriforme Ecklon & Zeyh. oakleaf garden geranium PEPE6 Pelargonium peltatum (L.) L'Hér. ex Ait. ivyleaf geranium PEQU5 Pelargonium quercifolium (L. f.) L'Hér. ex Ait. oakleaf geranium PEVI8 Pelargonium vitifolium (L.) L'Hér. ex Ait. grapeleaf geranium PEZO Pelargonium zonale (L.) L'Hér. ex Ait. horseshoe geranium PEDU3 Peltophorum dubia (Spreng.) Taubert horsebush PEPT Peltophorum pterocarpa (DC.) Backer ex K. Heyne yellow poinciana PEAL Pennisetum alopecuroides (L.) Spreng. Chinese fountaingrass PECI Pennisetum ciliare (L.) Link buffelgrass PECIC Pennisetum ciliare (L.) Link var. ciliare buffelgrass PECIS2 Pennisetum ciliare (L.) Link var. setigerum (Vahl) Leeke cow sandbur PECL2 Pennisetum clandestinum Hochst. ex Chiov. kikuyugrass PECO38 Pennisetum complanatum (Nees) Hemsl. Nicaraguan fountaingrass PEGL2 Pennisetum glaucum (L.) R. Br. pearl millet PELA5 Pennisetum latifolium Spreng. Uruguayan fountaingrass PEMA80 Pennisetum macrourum Trin. African feathergrass PENE4 Pennisetum nervosum (Nees) Trin. bentspike fountaingrass PEPE24 Pennisetum pedicellatum Trin. Kyasuma grass PEPEU Pennisetum pedicellatum Trin. ssp. unispiculum Brunken Kyasuma grass PEPE31 Pennisetum petiolare (Hochst.) Chiov. petioled fountaingrass PEPO4 Pennisetum polystachyon (L.) J.A. Schultes mission grass PEPOS Pennisetum polystachyon (L.) J.A. Schultes ssp. setosum (Sw.) Brunken mission grass PEPU2 Pennisetum purpureum Schumacher elephant grass PESE3 Pennisetum setaceum (Forsk.) Chiov. crimson fountaingrass PEVI2 Pennisetum villosum R. Br. ex Fresen. feathertop PESE10 Pentaglottis sempervirens (L.) Tausch ex Bailey evergreen bugloss PEPH2 Pentapetes phoenicea L. flor impia PELA19 Pentas lanceolata (Forsk.) Deflers Egyptian starcluster PEIN4 Pentzia incana (Thunb.) Kuntze African sheepbush PEAM6 Peperomia amplexicaulis (Sw.) A. Dietr. Jackie's saddle PEAC2 Pereskia aculeata P. Mill. Barbados shrub PEGR14 Pereskia grandifolia Haw. rose cactus PECU4 Pericallis cuneata (L'Hér.) Bolle common ragwort PEFR4 Perilla frutescens (L.) Britt. beefsteakplant PEFRC2 Perilla frutescens (L.) Britt. var. crispa (Benth.) Deane beefsteakplant PEFRF2 Perilla frutescens (L.) Britt. var. frutescens beefsteakplant PEGR9 Periploca graeca L. silkvine PEAM3 Persea americana P. Mill. avocado PEHY Petasites hybridus (L.) P.G. Gaertn., B. Mey. & Scherb. pestilence wort PEJA3 Petasites japonicus (Sieb. & Zucc.) Maxim. Japanese sweet coltsfoot PEVO Petrea volubilis L. queen's-wreath PEDU2 Petrorhagia dubia (Raf.) G. López & Romo hairypink PENA2 Petrorhagia nanteuilii (Burnat) P.W. Ball & Heywood proliferous pink PEPR4 Petrorhagia prolifera (L.) P.W. Ball & Heywood childing pink PESA9 Petrorhagia saxifraga (L.) Link saxifrage pink PECR2 Petroselinum crispum (P. Mill.) Nyman ex A.W. Hill parsley PEAT7 Petunia ×atkinsiana D. Don ex Loud. [axillaris × integrifolia] PEAX Petunia axillaris (Lam.) B.S.P. large white petunia PEIN5 Petunia integrifolia (Hook.) Schinz & Thellung violetflower petunia PEOS2 Peucedanum ostruthium (L.) W.D.J. Koch masterwort PEPA22 Peucedanum palustre (L.) Moench hogfennel PHTA2 Phaius tancarvilleae (Banks ex L'Hér.) Blume nun's-hood orchid PHAQ Phalaris aquatica L. bulbous canarygrass PHBR3 Phalaris brachystachys Link shortspike canarygrass PHCA5 Phalaris canariensis L. annual canarygrass PHMI3 Phalaris minor Retz. littleseed canarygrass PHPA5 Phalaris paradoxa L. hood canarygrass PHCO6 Phaseolus coccineus L. scarlet runner PHLU2 Phaseolus lunatus L. sieva bean PHVU Phaseolus vulgaris L. kidney bean PHAM2 Phellodendron amurense Rupr. Amur corktree PHJA Phellodendron japonicum Maxim. Japanese corktree PHCO32 Philadelphus cordifolius Lange heartleaf mock orange PHCO7 Philadelphus coronarius L. sweet mock orange PHKA4 Philadelphus karwinskianus Koehne evergreen mock orange PHTO7 Philadelphus tomentosus Royle fuzzy mock orange PHAR4 Phleum arenarium L. sand timothy PHPA8 Phleum paniculatum Huds. British timothy PHPR3 Phleum pratense L. timothy PHSU2 Phleum subulatum (Savi) Aschers. & Graebn. Italian timothy PHFR4 Phlomis fruticosa L. shrubby Jerusalem sage PHTU2 Phlomis tuberosa L. tuberous Jerusalem sage PHPR10 Phlox ×procumbens Lehm. (pro sp.) [stolonifera × subulata] PHCA13 Phoenix canariensis hort. ex Chabaud Canary Island date palm PHDA4 Phoenix dactylifera L. date palm PHRE Phoenix reclinata Jacq. Senegal date palm PHTE8 Phormium tenax J.R. & G. Forst. New Zealand flax PHDA5 Photinia davidiana (Dcne.) Cardot Chinese photinia PHGL17 Photinia glabra (Thunb.) Maxim. Japanese photinia PHSE17 Photinia serratifolia (Desf.) Kalkm. Taiwanese photinia PHVI81 Photinia villosa (Thunb.) DC. oriental photinia PHKA3 Phragmites karka (Retz.) Trin. ex Steud. tall reed PHAC3 Phyllanthus acidus (L.) Skeels Tahitian gooseberry tree PHAM5 Phyllanthus amarus Schumacher carry me seed PHAN9 Phyllanthus angustifolius (Sw.) Sw. foliage flower PHDE4 Phyllanthus debilis Klein ex Willd. niruri PHEM2 Phyllanthus emblica L. emblic PHFR5 Phyllanthus fraternus G.L. Webster gulf leaf-flower PHPU11 Phyllanthus pulcher Wallich ex Muell.-Arg. tropical leaf-flower PHTE5 Phyllanthus tenellus Roxb. Mascarene Island leaf-flower PHUR Phyllanthus urinaria L. chamber bitter PHAU8 Phyllostachys aurea Carr. ex A.& C. Rivière golden bamboo PHAU80 Phyllostachys aureosulcata McClure yellow grove bamboo PHBA80 Phyllostachys bambusoides Sieb. & Zucc. Japanese timber bamboo PHDU3 Phyllostachys dulcis McClure sweetshoot bamboo PHED4 Phyllostachys edulis (Carr.) Houz. tortoise shell bamboo PHFL80 Phyllostachys flexuosa A.& C. Rivière drooping timber bamboo PHME80 Phyllostachys meyeri McClure Meyer's bamboo PHNI80 Phyllostachys nigra (Lodd.) Munro black bamboo PHRU7 Phyllostachys rubromarginata McClure reddish bamboo PHVI15 Phyllostachys viridiglaucescens (Carriere) A.& C. Rivière greenwax golden bamboo PHAL5 Physalis alkekengi L. strawberry groundcherry PHPE4 Physalis peruviana L. Peruvian groundcherry PHPH2 Physalis philadelphica Lam. Mexican groundcherry PHPHI Physalis philadelphica Lam. var. immaculata Waterfall Mexican groundcherry PHBO9 Phytolacca bogotensis Kunth PHHE8 Phytolacca heteropetala H. Walt. Mexican pokeweed PIAB Picea abies (L.) Karst. Norway spruce PIEC Picris echioides L. bristly oxtongue PIHI Picris hieracioides L. hawkweed oxtongue‡ PIHIH Picris hieracioides L. ssp. hieracioides hawkweed oxtongue PIPA9 Picris pauciflora Willd. smallflower oxtongue PISP Picris sprengeriana (L.) Poir. bitterweed PIDE2 Pilea depressa (Sw.) Blume depressed clearweed PIIN6 Pilea involucrata (Sims) Urban PITR4 Pilea trianthemoides (Sw.) Lindl. artillery plant PIDI2 Pimenta dioica (L.) Merr. allspice PIAN3 Pimpinella anisum L. anise burnet saxifrage PIMA6 Pimpinella major (L.) Huds. hollowstem burnet saxifrage PISA Pimpinella saxifraga L. solidstem burnet saxifrage PISAN Pimpinella saxifraga L. ssp. nigra (P. Mill.) Gaudin solidstem burnet saxifrage PISAS Pimpinella saxifraga L. ssp. saxifraga solidstem burnet saxifrage PITE Pinellia ternata (Thunb.) Makino ex Breitenbach crowdipper PIHA7 Pinus halepensis P. Mill. aleppo pine PIMU80 Pinus mugo Turra mugo pine PINI Pinus nigra Arnold Austrian pine PIPI6 Pinus pinaster Soland., non Ait. maritime pine PIPI7 Pinus pinea L. Italian stone pine PISY Pinus sylvestris L. Scots pine PITH3 Pinus thunbergiana Franco Japanese black pine PIAU Piper auritum Kunth Vera cruz pepper† PIME Piper methysticum G. Forst. kava PIMI3 Piptatherum miliaceum (L.) Coss. smilograss PISE4 Piptochaetium setosum (Trin.) Arech. bristly speargrass PIGR6 Pisonia grandis R. Br. grand devil's-claws PIAT4 Pistacia atlantica Desf. Mt. Atlas mastic tree PICH4 Pistacia chinensis Bunge Chinese pistache PIFU Pisum fulvum Sibthorp & Sm. tawny pea PISA6 Pisum sativum L. garden pea PIDU Pithecellobium dulce (Roxb.) Benth. monkeypod PIGR5 Pithecellobium graciliflorum Blake Guadeloupe blackbead PICR3 Pithecoctenium crucigerum (L.) A.H. Gentry monkey's-comb PICR Pittosporum crassifolium Banks & Soland. ex A. Cunningham stiffleaf cheesewood PIPE8 Pittosporum pentandrum (Blanco) Merr. Taiwanese cheesewood PITE11 Pittosporum tenuifolium Gaertn. tawhiwhi PITO2 Pittosporum tobira (Thunb.) Ait. f. Japanese cheesewood PIUN2 Pittosporum undulatum Vent. Australian cheesewood PIVI5 Pittosporum viridiflorum Sims cape cheesewood PLCO3 Plantago coronopus L. buckhorn plantain PLDE Plantago debilis R. Br. weak plantain PLFI3 Plantago firma Kunze ex Walp. Chilean plantain PLLA Plantago lanceolata L. narrowleaf plantain PLME Plantago media L. hoary plantain PLPS Plantago psyllium L. sand plantain PLOR80 Platycladus orientalis (L.) Franco oriental arborvitae PLGR5 Platycodon grandiflorum (Jacq.) A. DC. balloon flower PLAM2 Plectranthus amboinicus (Lour.) Spreng. Mexican mint PLPA3 Plectranthus parviflorus Willd. little spurflower PLVE2 Plectranthus verticillatus (L. f.) Druce whorled plectranthus PLIN4 Pluchea indica (L.) Less. Indian camphorweed PLAU6 Plumbago auriculata Lam. cape leadwort PLIN8 Plumbago indica L. whorled plantain PLRU2 Plumeria rubra L. templetree POAN Poa annua L. annual bluegrass POBU Poa bulbosa L. bulbous bluegrass POCH Poa chaixii Vill. broadleaf bluegrass POCO Poa compressa L. Canada bluegrass POIN30 Poa infirma Kunth weak bluegrass POPR Poa pratensis L. Kentucky bluegrass‡ POPRI2 Poa pratensis L. ssp. irrigata (Lindm.) Lindb. f. spreading bluegrass POTR2 Poa trivialis L. rough bluegrass POMA32 Podocarpus macrophyllus (Thunb.) Sweet yew plum pine POMAM Podocarpus macrophyllus (Thunb.) Sweet var. maki Endl. yew plum pine PORI4 Podranea ricasoliana (Tanfani) Sprague Zimbabwe creeper POCA2 Polemonium caeruleum L. charity POCU7 Polemonium cuspidatum Sieb. & Zucc. stiffpoint Jacob's-ladder POCO30 Polycarpaea corymbosa (L.) Lam. oldman's cap POTE Polycarpon tetraphyllum (L.) L. fourleaf manyseed POTEA Polycarpon tetraphyllum (L.) L. ssp. alsinifolium (Biv.) P.W. Ball fourleaf manyseed POTET2 Polycarpon tetraphyllum (L.) L. ssp. tetraphyllum fourleaf manyseed POMA24 Polycnemum majus A. Braun giant needleleaf POVU2 Polygala vulgaris L. common milkwort POHI13 Polygonatum hirsutum (Bosc ex Poir.) Pursh broadleaf Solomon's seal POAR10 Polygonum arenarium Waldst. & Kit. European knotweed POAR11 Polygonum arenastrum Jord. ex Boreau oval-leaf knotweed POAR5 Polygonum argyrocoleon Steud. ex Kunze silversheath knotweed POAU4 Polygonum aubertii Henry Chinese fleecevine POAV Polygonum aviculare L. prostrate knotweed POBA3 Polygonum baldschuanicum Regel Bukhara fleeceflower POBE Polygonum bellardii All. narrowleaf knotweed POBI5 Polygonum bistorta L. meadow bistort‡ POBIB2 Polygonum bistorta L. var. bistorta meadow bistort POBU3 Polygonum bungeanum Turcz. Bunge's smartweed POCA49 Polygonum caespitosum Blume oriental ladysthumb‡ POCAC4 Polygonum caespitosum Blume var. ?caespitosum oriental ladysthumb POCA20 Polygonum campanulatum Hook. f. bellflower smartweed POCA21 Polygonum capitatum Buch.-Ham. ex D. Don pinkhead smartweed POCH6 Polygonum chinense L. Chinese knotweed POCO10 Polygonum convolvulus L. black bindweed POCOC2 Polygonum convolvulus L. var. convolvulus black bindweed POCOS Polygonum convolvulus L. var. subulatum Lej. & Court. black bindweed POCU6 Polygonum cuspidatum Sieb. & Zucc. Japanese knotweed POHE18 Polygonum herniarioides Delile POHY Polygonum hydropiper L. marshpepper knotweed POLA22 Polygonum lacerum Kunth † PONE9 Polygonum nepalense Meisn. Nepalese smartweed POOR2 Polygonum orientale L. kiss me over the garden gate POPA9 Polygonum patulum Bieb. Bellard's smartweed POPE10 Polygonum perfoliatum L. Asiatic tearthumb POPE3 Polygonum persicaria L. spotted ladysthumb† POPL9 Polygonum plebeium R. Br. POPO3 Polygonum polycnemoides Jaubert & Spach manyleg knotweed POPO5 Polygonum polystachyum Wallich ex Meisn. cultivated knotweed POSA4 Polygonum sachalinense F. Schmidt ex Maxim. giant knotweed POAU3 Polypogon australis Brongn. Chilean rabbitsfoot grass POFU7 Polypogon fugax Nees Asia Minor bluegrass POIN7 Polypogon interruptus Kunth ditch rabbitsfoot grass POMA10 Polypogon maritimus Willd. Mediterranean rabbitsfoot grass POMO5 Polypogon monspeliensis (L.) Desf. annual rabbitsfoot grass POVI9 Polypogon viridis (Gouan) Breistr. beardless rabbitsfoot grass POCU14 Polyscias cumingiana (K. Presl) Fernandez-Villar POFR5 Polyscias fruticosa (L.) H.A.T. Harms Ming aralia POGU Polyscias guilfoylei (Bull ex Cogn. & E. March.) Bailey geranium aralia POSC10 Polyscias scutellaria (Burm. f.) Fosberg shield aralia POAM12 Polytrias amaura (Büse ex Miq.) Kuntze Java grass POTR4 Poncirus trifoliata (L.) Raf. hardy orange POAL7 Populus alba L. white poplar POCA14 Populus ×canescens (Ait.) Sm. (pro sp.) [alba × tremula] gray poplar PONI Populus nigra L. Lombardy poplar POTO7 Populus tomentosa Carr. Chinese white poplar POTR10 Populus tremula L. European aspen POPA10 Poranopsis paniculata (Roxb.) Roberty bridal bouquet POAM13 Portulaca amilis Speg. Paraguayan purslane POGR7 Portulaca grandiflora Hook. rose moss POQU2 Portulaca quadrifida L. chickenweed POOC3 Posidonia oceania (L.) Delile Mediterranean tapeweed POCR3 Potamogeton crispus L. curly pondweed POAL26 Potentilla alba L. white cinquefoil POAN7 Potentilla anglica Laicharding English cinquefoil POAR8 Potentilla argentea L. silver cinquefoil POARA3 Potentilla argentea L. var. argentea silver cinquefoil POARP2 Potentilla argentea L. var. pseudocalabra T. Wolf silver cinquefoil POCO15 Potentilla collina Wibel palmleaf cinquefoil POER81 Potentilla erecta (L.) Raeusch. erect cinquefoil POFR7 Potentilla fragiformis Willd. ex Schlecht. strawberry cinquefoil POIN10 Potentilla inclinata Vill. ashy cinquefoil POIN8 Potentilla intermedia L. downy cinquefoil PORE5 Potentilla recta L. sulphur cinquefoil PORE6 Potentilla reptans L. creeping cinquefoil POCA23 Pouteria campechiana (Kunth) Baehni canistel PODO5 Pouteria dominigensis (Gaertn. f.) Baehni jacana POSA13 Pouteria sapota (Jacq.) H.E. Moore & Stearn naseberry POZE Pouzolzia zeylanica (L.) Benn. graceful pouzolzsbush PROD Premna odorata Blanco fragrant premna PRAN5 Primula anisodora Balf. f. & G. Forrest anise primrose PRJA2 Primula japonica Gray Japanese primrose PRPO2 Primula ×polyantha P. Mill. (pro sp.) [veris × vulgaris] elatior hybrid primroses PRVE2 Primula veris L. cowslip primrose PRFA2 Prosopis farcta (Banks & Soland.) J.F. Macbr. Syrian mesquite PRJU3 Prosopis juliflora (Sw.) DC. mesquite PRLA6 Prosopis laevigata (Humb. & Bonpl. ex Willd.) M.C. Johnston smooth mesquite PRPA4 Prosopis pallida (Humb. & Bonpl. ex Willd.) Kunth kiawe PRST3 Prosopis strombulifera (Lam.) Benth. Argentine screwbean PRLA7 Prunella laciniata (L.) L. cutleaf selfheal PRAR3 Prunus armeniaca L. apricot PRAV Prunus avium (L.) L. sweet cherry PRCE2 Prunus cerasifera Ehrh. cherry plum PRCE Prunus cerasus L. sour cherry PRDO Prunus domestica L. European plum PRDOD Prunus domestica L. var. domestica European plum PRDOI Prunus domestica L. var. insititia (L.) Fiori & Paoletti European plum PRDU Prunus dulcis (P. Mill.) D.A. Webber sweet almond PRFR2 Prunus fruticosa Pallas European dwarf cherry PRGL80 Prunus glandulosa Thunb. flowering almond PRLA5 Prunus laurocerasus L. cherry laurel PRLU Prunus lusitanica L. Portugal laurel PRMA Prunus mahaleb L. Mahaleb cherry PRPA5 Prunus padus L. European bird cherry PRPE3 Prunus persica (L.) Batsch peach PRSE3 Prunus serrulata Lindl. Japanese flowering cherry PRSP Prunus spinosa L. blackthorn PRSU4 Prunus subhirtella Miq. PRTO80 Prunus tomentosa Thunb. Nanking cherry PRTR3 Prunus triloba Lindl. flowering plum PSJU3 Psathyrostachys juncea (Fisch.) Nevski Russian wildrye PSST8 Pseudabutilon stuckertii R.E. Fries velvetleaf Indian mallow PSUM Pseudanamomis umbellulifera (Kunth) Kausel ciruelas PSSP4 Pseudelephantopus spicatus (Juss. ex Aubl.) C.F. Baker dog's-tongue PSCA16 Pseuderanthemum carruthersii (Seem.) Guillaumin PSPR Pseuderanthemum praecox (Benth.) Leonard night and afternoon PSSI4 Pseudocydonia sinensis (Dum.-Cours.) Schneid. Chinese-quince PSLU2 Pseudofumaria lutea (L.) Borkh. rock fumewort PSAT5 Pseudognaphalium attenuatum (DC.) A. Anderb. tapered cudweed PSEL4 Pseudognaphalium elegans (Kunth) Kartesz, comb. nov. ined. royal cudweed PSLU6 Pseudognaphalium luteoalbum (L.) Hilliard & Burtt Jersey cudweed PSRO Pseudognaphalium roseum (Kunth) A. Anderb. rosy cudweed PSCH Pseudogynoxys chenopodioides Kunth Mexican flamevine PSJA Pseudosasa japonica (Sieb. & Zucc. ex Steud.) Makino ex Nakai arrow bamboo PSCA Psidium cattleianum Sabine strawberry guava PSGU Psidium guajava L. guava PSPU2 Psychotria punctata Vatke dotted wild coffee PTCR2 Pteris cretica L. Cretan brake PTCRA Pteris cretica L. var. albolineata Hook. Cretan brake PTCRC Pteris cretica L. var. cretica Cretan brake PTEN Pteris ensiformis Burm. f. slender brake PTMU Pteris multifida Poir. spider brake PTTR3 Pteris tremula R.Br. Australian brake PTTR2 Pteris tripartita Sw. giant brake PTVI Pteris vittata L. ladder brake PTST80 Pterocarya stenoptera C. DC. Chinese wingnut PTEL Ptychosperma elegans (R. Br.) Blume PUMA Puccinellia maritima (Huds.) Parl. seaside alkaligrass PURU Puccinellia rupestris (With.) Fern. & Weatherby British alkaligrass PUMO Pueraria montana (Lour.) Merr. kudzu PUMOL Pueraria montana (Lour.) Merr. var. lobata (Willd.) Maesen & S. Almeida kudzu PUPH2 Pueraria phaseoloides (Roxb.) Benth. tropical kudzu PUAR2 Pulicaria arabica (L.) Cass. ladies' false fleabane PUDY Pulicaria dysenterica (L.) Bernh. meadow false fleabane PUPA6 Pulicaria paludosa Link Spanish false fleabane PUOF Pulmonaria officinalis L. common lungwort PUSA2 Pulmonaria saccharata P. Mill. Bethlehem lungwort PUGR2 Punica granatum L. pomegranate PYAN Pyracantha angustifolia (Franch.) Schneid. narrowleaf firethorn PYCO2 Pyracantha coccinea M. Roemer scarlet firethorn PYCR7 Pyracantha crenulata (D. Don) Roemer PYFO Pyracantha fortuneana (Maxim.) Li Chinese firethorn PYKO Pyracantha koidzumii (Hayata) Rehd. Formosa firethorn PYVE2 Pyrostegia venusta (Ker-Gawl.) Miers flamevine PYCA80 Pyrus calleryana Dcne. Callery pear PYCO Pyrus communis L. common pear PYPY2 Pyrus pyrifolia (Burm. f.) Nakai Chinese pear

† Probably introduced to the U.S.

‡ Some populations in the U.S. are native and others are introduced from other countries

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