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 ENCO2 Enterolobium contortisiliquum (Vell.) Morong pacara earpod tree AGAV Agrostis avenacea J.F. Gmel. Pacific bentgrass SPEX Spermacoce exilis (L.O. Williams) C. Adams Pacific false buttonweed MIFL3 Miscanthus floridulus (Labill.) Warb. ex K. Schum. & Laut. Pacific Island silvergrass CIBU2 Cinnamomum burmannii (Nees & Th. Nees) Nees ex Blume Padang cassia SASI19 Salpiglossis sinuata Ruiz & Pavón painted tongue CRGR6 Cryptostegia grandiflora (Roxb. ex R. Br.) R. Br. Palay rubbervine LIBI5 Linum bienne P. Mill. pale flax ALAL3 Alyssum alyssoides (L.) L. pale madwort IRPS Iris pseudacorus L. paleyellow iris URBR2 Urochloa brizantha (C. Hochstetter ex A. Rich.) R. Webster palisade signalgrass KAGA Kalanchoe gastonis-bonnieri Hamet & Perrier palm beachbells CUCA3 Curculigo capitulata (Lour.) Kuntze palm-grass SEPA6 Setaria palmifolia (Koenig) Stapf palmgrass POCO15 Potentilla collina Wibel palmleaf cinquefoil RUSI4 Rubus sieboldii Blume palmleaf dewberry CAPA65 Carludovica palmata Ruiz & Pavón Panama hat plant CAEL5 Castilla elastica Sessé Panama rubbertree STAP Sterculia apetala (Jacq.) Karst. Panama tree DIER Digitaria eriantha Steud. pangolagrass URPA Urochloa panicoides Beauv. panic liverseed grass EHER Ehrharta erecta Lam. panic veldtgrass HYPA Hydrangea paniculata Sieb. panicled hydrangea AEPA4 Aeschynomene paniculatus Willd. ex Vog. pannicle jointvetch CAPA23 Carica papaya L. papaya BRPA4 Broussonetia papyrifera (L.) L'Hér. ex Vent. paper mulberry BOGL4 Bougainvillea glabra Choisy paperflower NAPA3 Narcissus papyraceus Ker-Gawl. paperwhite narcissus CYPA8 Cyperus papyrus L. papyrus URMU Urochloa mutica (Forsk.) T.Q. Nguyen para grass MAPU Malus pumila P. Mill. paradise apple DAME3 Daphne mezereum L. paradise plant ACPA8 Acacia paradoxa DC. paradox acacia ILPA2 Ilex paraguayensis St.-Hil. Paraguay tea RUPA24 Rumex paraguayensis Parodi Paraguayan dock POAM13 Portulaca amilis Speg. Paraguayan purslane ACAU2 Acanthospermum australe (Loefl.) Kuntze Paraguayan starburr CHCA6 Chloris canterai Arech. Paraguayan windmill grass CHCAC5 Chloris canterai Arech. var. canterai Paraguayan windmill grass CHCAG3 Chloris canterai Arech. var. grandiflora (Roseng. & Izag.) D.E. Anderson Paraguayan windmill grass HEPS2 Heliconia psittacorum L. f. parakeetflower MATA3 Macaranga tanarius (L.) Muell.-Arg. parasol leaf tree TRBO5 Triumfetta bogotensis DC. parquet burr MYAQ2 Myriophyllum aquaticum (Vell.) Verdc. parrot feather watermilfoil PECR2 Petroselinum crispum (P. Mill.) Nyman ex A.W. Hill parsley EULE6 Euphorbia leucocephala Lotsy pascuita CRPA20 Crepis pannonica (Jacq.) K. Koch pasture hawksbeard CEBO Centaurea bovina Velen. pasture knapweed CYPR10 Cyathula prostrata (L.) Blume pastureweed RUPA5 Rumex patientia L. patience dock SATH5 Sageretia thea (Osbeck) M.C. Johnston pauper's-tea PRPE3 Prunus persica (L.) Batsch peach CAPE20 Campanula persicifolia L. peachleaf bellflower LEDEP2 Leptochloa decipiens (R. Br.) Stapf ex Maiden ssp. peacockii (Maiden & Betche) N. Snow peacock sprangletop FAMO Falcataria moluccana (Miquel) Barneby & Grimes peacocksplume ARHY Arachis hypogaea L. peanut TRPO6 Trifolium polymorphum Poir. peanut clover PEGL2 Pennisetum glaucum (L.) R. Br. pearl millet ACPO2 Acacia podalyriifolia A. Cunningham ex G. Don pearl wattle VAGL2 Vallesia glabra (Cav.) Link pearlberry HESU4 Heterocentron subtriplinervium (Link & Otto) A. Braun & Bouché pearlflower FIRE3 Ficus religiosa L. peepul tree COAC2 Cotoneaster acutifolius Turcz. Peking cotoneaster SYREP Syringa reticulata (Blume) Hara ssp. pekinensis (Rupr.) P.S. Greene & M.C. Chang Peking tree lilac ARGR2 Aristolochia grandiflora Sw. pelicanflower ARPE7 Aristolochia peltata L. peltate dutchman's pipe† TIPE Tilia petiolaris DC. pendent silver linden MAMA28 Macaranga mappa (L.) Muell.-Arg. pengua MEPU Mentha pulegium L. pennyroyal MEPI Mentha ×piperita L. (pro sp.) [aquatica × spicata] peppermint JAIN Jatropha integerrima Jacq. peregrina JAINH Jatropha integerrima Jacq. var. hastata (Jacq.) Fosberg peregrina JAINI Jatropha integerrima Jacq. var. integerrima peregrina ATSU80 Atriplex suberecta I. Verd. peregrine saltbush CEMO Centaurea montana L. perennial cornflower ERPS80 Eriochloa pseudoacrotricha (Stapf ex Thellung) C.E. Hubbard ex S.T. Blake perennial cupgrass LURE Lunaria rediviva L. perennial honesty SCPE5 Scleranthus perennis L. perennial knawel LALA4 Lathyrus latifolius L. perennial pea BRME Briza media L. perennial quakinggrass LOPE Lolium perenne L. perennial ryegrass LOPEP Lolium perenne L. ssp. perenne perennial ryegrass NEWI2 Neonotonia wightii (Wight & Arn.) Lackey perennial soybean ZEPE Zea perennis (A.S. Hitchc.) Reeves & Manglesdorf perennial teosinte EHCA Ehrharta calycina Sm. perennial veldtgrass DITE4 Diplotaxis tenuifolia (L.) DC. perennial wallrocket LIPE Limonium perezii (Stapf) F.T. Hubbard Perez's sealavender GYPE Gypsophila perfoliata L. perfoliate babysbreath MEPE2 Melampodium perfoliatum (Cav.) Kunth perfoliate blackfoot PAVI12 Passiflora vitifolia Kunth perfumed passionflower NEMU3 Nepeta mussinii Henckel Persian catmint AECR Aegilops crassa Boiss. Persian goatgrass SYPE Syringa ×persica L. [afghanica × laciniata] Persian lilac LOPE2 Lolium persicum Boiss. & Hohen. ex Boiss. Persian ryegrass PHPE4 Physalis peruviana L. Peruvian groundcherry GLPE Glandularia peruviana (L.) Druce Peruvian mock vervain SOPE9 Solanum peruvianum L. Peruvian nightshade PARA6 Paspalum racemosum Lam. Peruvian paspalum SCMO Schinus molle L. Peruvian peppertree LUPE6 Ludwigia peruviana (L.) Hara Peruvian primrose-willow AMPE2 Ambrosia peruviana Willd. Peruvian ragweed ZIPE Zinnia peruviana (L.) L. Peruvian zinnia† PEHY Petasites hybridus (L.) P.G. Gaertn., B. Mey. & Scherb. pestilence wort PEPE31 Pennisetum petiolare (Hochst.) Chiov. petioled fountaingrass BAMU3 Bauhinia multinervia (Kunth) DC. petite flamboyant bauhinia NABU Narcissus bulbocodium L. petticoat daffodil EUPE6 Euphorbia peplus L. petty spurge AGCO4 Aglaonema commutatum Schott Philippine evergreen AGCOM Aglaonema commutatum Schott var. maculatum (Hook. f.) Nicolson Philippine evergreen SPPL Spathoglottis plicata Blume Philippine ground orchid LIPH4 Lilium philippinense Baker Philippine lily PAPH2 Paspalidium philippianum Parodi Philippine watercrown grass CRPE10 Cruciata pedemontana (Bellardi) Ehrend. piedmont bedstraw COOR2 Cotyledon orbiculata L. pig's ear COORO Cotyledon orbiculata L. var. oblongata (Haw.) DC. pig's ear CACA27 Cajanus cajan (L.) Millsp. pigeonpea ANCO30 Ananas comosus (L.) Merr. pineapple LIPI3 Linaria pinifolia (Poir.) Thellung pineneedle toadflax CLHA Cleome hassleriana Chod. pink queen TARO Tabebuia rosea (Bertol.) DC. pink trumpet-tree OXDE3 Oxalis debilis Kunth pink woodsorrel OXDEC Oxalis debilis Kunth var. corymbosa (DC.) Lourteig pink woodsorrel ARCI2 Arthrostemma ciliatum Pavón ex D. Don pinkfringe POCA21 Polygonum capitatum Buch.-Ham. ex D. Don pinkhead smartweed DIRO2 Dissotis rotundifolia (Sm.) Triana pinklady DAPI3 Dahlia pinnata Cav. pinnate dahlia SCPI3 Schkuhria pinnata (Lam.) Kuntze ex Thell. pinnate false threadleaf‡ SCPIP Schkuhria pinnata (Lam.) Kuntze ex Thell. var. pinnata pinnate false threadleaf TADI5 Tabernaemontana divaricata (L.) R. Br. ex Roemer & J.A. Schultes pinwheelflower HAGR3 Hackelochloa granularis (L.) Kuntze pitscale grass BOPE2 Bothriochloa pertusa (L.) A. Camus pitted beardgrass ERPL5 Eryngium planum L. plains eryngo URPL Urochloa plantaginea (Link) R. Webster plantain signalgrass PALO8 Paraserianthes lophantha (Willd.) I. Nielsen plume albizia MACO10 Macleaya cordata (Willd.) R. Br. plume poppy DIMI9 Dichelachne micrantha (Cav.) Domin plumegrass MAPR Malus prunifolia (Willd.) Borkh. plumleaf crabapple JAOF Jasminum officinale L. poet's jasmine NAPO Narcissus poeticus L. poet's narcissus EUPU9 Euphorbia pulcherrima Willd. ex Klotzsch poinsettia RAVO Rauvolfia vomitoria Afzelius poison devil's-pepper COMA2 Conium maculatum L. poison hemlock CRAS6 Crinum asiaticum L. poisonbulb EUDI9 Euphrasia disjuncta Fern. & Wieg. polar eyebright BUOF Buddleja officinalis Maxim. pole butterflybush RORE3 Rosa ×rehderiana Blackb. [chinensis × multiflora] polyantha rose SCGL Schizostachyum glaucifolium (Rupr.) Munro Polynesian 'ohe PUGR2 Punica granatum L. pomegranate CAST Callitriche stagnalis Scop. pond water-starwort DEIN6 Derris indica (Lam.) Bennett pongame oiltree SCPI Schizanthus pinnatus Ruiz & Pavón poorman's orchid ANARF Anagallis arvensis L. ssp. foemina (P. Mill.) Schinz & Thellung poorman's weatherglass ATHO2 Atriplex holocarpa F. Muell. pop saltbush HOCA6 Hoya carnosa (L. f.) R. Br. porcelainflower BAPR Barleria prionitis L. porcupine flower AEHI2 Aeschynomene histrix Poir. porcupine jointvetch AEHII Aeschynomene histrix Poir. var. incana (Vogel) Benth. porcupine jointvetch FIRU4 Ficus rubiginosa Desf. Port Jackson fig SEIT2 Senna italica P. Mill. Port Royal senna THPO3 Thespesia populnea (L.) Soland. ex Correa Portia tree PRLU Prunus lusitanica L. Portugal laurel LELA10 Leucanthemum lacustre (Brot.) Samp. Portuguese daisy CAOF Calendula officinalis L. pot marigold BRST2 Bromus sterilis L. poverty brome RAPL Ranunculus platensis Spreng. prairie buttercup TREC2 Trifolium echinatum Bieb. prickly clover SYAS Symphytum asperum Lepechin prickly comfrey URPI Urospermum picroides (L.) Scop. ex F.W. Schmidt prickly goldenfleece BEHE Berkheya heterophylla O. Hoffmann prickly gousblom CYGL8 Cynoglossum glochidiatum Wallich ex Benth. prickly hound's tongue LASE Lactuca serriola L. prickly lettuce ACVE2 Acacia verticillata (L'Hér.) Willd. prickly Moses SATR12 Salsola tragus L. prickly Russian thistle SCMU3 Scorpiurus muricatus L. prickly scorpion's-tail CASP10 Carex spicata Huds. prickly sedge DAIN2 Datura inoxia P. Mill. pricklyburr LASP Lagerstroemia speciosa (L.) Pers. pride of India ECCA5 Echium candicans L. f. pride of Madeira CAPU13 Caesalpinia pulcherrima (L.) Sw. pride-of-Barbados ENPR Enteropogon prieurii (Kunth) W.D. Clayton Prieur's umbrellagrass TADO2 Tabebuia donnell-smithii Rose primavera NAME2 Narcissus ×medioluteus P. Mill. (pro sp.) [poeticus × tazetta] primrose peerless AMHY2 Amaranthus hypochondriacus L. Prince-of-Wales feather SEPT Selenicereus pteranthus (Link ex A. Dietr.) Britt. & Rose princess of the night TIUR Tibouchina urvilleana (DC.) Cogn. princess-flower PATO2 Paulownia tomentosa (Thunb.) Sieb. & Zucc. ex Steud. princesstree GAOF Galega officinalis L. professor-weed PENA2 Petrorhagia nanteuilii (Burnat) P.W. Ball & Heywood proliferous pink ANSE6 Anthemis secundiramea Biv. prostrate chamomile LIPR5 Lindernia procumbens (Knock.) Borb. prostrate false pimpernel POAV Polygonum aviculare L. prostrate knotweed APPR2 Apium prostratum Labill. prostrate marshwort KOPR80 Kochia prostrata (L.) Schrad. prostrate summercypress VEOFP Verbena officinalis L. var. prostrata Gren. & Godr. prostrate verbena RUPR18 Ruellia prostrata Poir. prostrate wild petunia ROPR Rorippa prostrata (Bergeret) Schinz & Thellung prostrate yellowcress IBPR2 Iberis pruitii Tineo Pruit's candytuft LYMA3 Lythrum maritimum Kunth pukamole TRTE Tribulus terrestris L. puncturevine FIPA2 Ficus palmata Forsk. Punjab fig MEQU Melaleuca quinquenervia (Cav.) Blake punktree SCPU7 Scleria purdiei C.B. Clarke Purdie's nutrush† SOMA Solanum marginatum L. f. purple African nightshade AMBL2 Amaranthus blitum L. purple amaranth CADI Callicarpa dichotoma (Lour.) K. Koch purple beautyberry VINA Vicia narbonensis L. purple broad vetch TRPU15 Trifolium purpureum Lois. purple clover COVA2 Coronilla varia L. purple crownvetch LAPU2 Lamium purpureum L. purple deadnettle LAPUI Lamium purpureum L. var. incisum (Willd.) Pers. purple deadnettle LAPUP Lamium purpureum L. var. purpureum purple deadnettle BRDI2 Brachypodium distachyon (L.) Beauv. purple false brome DIPU Digitalis purpurea L. purple foxglove DIPUA Digitalis purpurea L. var. alba hort. purple foxglove DIPUP2 Digitalis purpurea L. var. purpurea purple foxglove PAED Passiflora edulis Sims purple granadilla LYSA2 Lythrum salicaria L. purple loosestrife MOAR6 Moricandia arvensis (L.) DC. purple mistress SPPU Spondias purpurea L. purple mombin MOCA2 Molinia caerulea (L.) Moench purple moorgrass VEPH2 Verbascum phoeniceum L. purple mullein COJU2 Cortaderia jubata (Lem.) Stapf purple pampas grass LIPU3 Linaria purpurea (L.) P. Mill. purple toadflax OXPU2 Oxalis purpurea L. purple woodsorrel LEHE2 Lepidium heterophyllum Benth. purpleanther field pepperweed CYSA3 Cyperus sanguindentus Vahl purpleglume flatsedge LIRE8 Linaria reticulata (Sm.) Desf. purplenet toadflax SAPU2 Salix purpurea L. purpleosier willow XAVI Xanthosoma violaceum Schott purplestem taro VEBO Verbena bonariensis L. purpletop vervain VEBOB Verbena bonariensis L. var. bonariensis purpletop vervain VEBOC Verbena bonariensis L. var. conglomerata Briq. purpletop vervain BUPU Buchnera pusilla Kunth pygmy bluehearts SAPU13 Saponaria pumilio (L.) Fenzl ex A. Braun pygmy pink STPA9 Stellaria parva Pedersen pygmy starwort ORPY Ornithogalum pyrenaicum L. Pyrenees star of Bethlehem CHCO14 Chrysanthemum coccineum Willd. pyrethum daisy

† 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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