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 RALI Radiola linoides Roth allseed RAFO2 Randia formosa (Jacq.) K. Schum. jasmin de rosa RAAC3 Ranunculus acris L. tall buttercup‡ RAACA3 Ranunculus acris L. var. acris showy buttercup RAAR3 Ranunculus arvensis L. corn buttercup RABO Ranunculus bonariensis Poir. Carter's buttercup RABOT Ranunculus bonariensis Poir. var. trisepalus (Gillies ex Hook. & Arn.) Lourteig Carter's buttercup RABU Ranunculus bulbosus L. St. Anthony's turnip RAFI Ranunculus ficaria L. fig buttercup RAFIB Ranunculus ficaria L. var. bulbifera Marsden-Jones fig buttercup RAMA4 Ranunculus marginatus d'Urv. margined buttercup RAMAT Ranunculus marginatus d'Urv. var. trachycarpus (Fisch. & C.A. Mey.) Arn. margined buttercup RAMU2 Ranunculus muricatus L. spinyfruit buttercup RAPA3 Ranunculus parviflorus L. smallflower buttercup RAPL Ranunculus platensis Spreng. prairie buttercup RAPL2 Ranunculus plebeius R. Br. ex DC. common Australian buttercup RARE3 Ranunculus repens L. creeping buttercup RASA Ranunculus sardous Crantz hairy buttercup RATR2 Ranunculus trilobus Desf. threelobe buttercup RARA2 Raphanus raphanistrum L. wild radish RASA2 Raphanus sativus L. cultivated radish RARU Rapistrum rugosum (L.) All. annual bastardcabbage RARUO Rapistrum rugosum (L.) All. ssp. orientale (L.) Arcang. oriental bastardcabbage RARUR2 Rapistrum rugosum (L.) All. ssp. rugosum annual bastardcabbage RAVO Rauvolfia vomitoria Afzelius poison devil's-pepper RAMA7 Ravenala madagascariensis Sonnerat traveler's tree REPI Reichardia picroides (L.) Roth common brighteyes RETI Reichardia tingitana (L.) Roth false sowthistle REAL Reseda alba L. white upright mignonette RELU Reseda lutea L. yellow mignonette RELU2 Reseda luteola L. weld REOD Reseda odorata L. garden mignonette REPH Reseda phyteuma L. rampion mignonette RHST3 Rhagadiolus stellatus (L.) Gaertn. endive daisy RHAR6 Rhamnus arguta Maxim. RHARV Rhamnus arguta Maxim. var. velutina Hand.-Maz. RHCA3 Rhamnus cathartica L. common buckthorn RHDA Rhamnus davurica Pallas Dahurian buckthorn RHDAD2 Rhamnus davurica Pallas ssp. davurica Dahurian buckthorn RHDAN2 Rhamnus davurica Pallas ssp. nipponica (Makino) Kartesz & Gandhi Dahurian buckthorn RHJA8 Rhamnus japonica Maxim. Japanese buckthorn RHUT80 Rhamnus utilis Dcne. Chinese buckthorn RHRH2 Rheum rhabarbarum L. garden rhubarb RHAL6 Rhinanthus alectorolophus (Scop.) Pollich European yellowrattle RHSE9 Rhinanthus serotinus (Schönh) Oborny late-flowering yellowrattle RHJA2 Rhododendron japonicum (Gray) Sur. Japanese azalea RHTO Rhodomyrtus tomentosus (Ait.) Hassk. rose myrtle RHSC3 Rhodotypos scandens (Thunb.) Makino jetbead RHKU Rhynchospora kunthii Nees ex Kunth Kunth's beaksedge RIAL2 Ribes alpinum L. alpine currant RINI Ribes nigrum L. European black currant RIRU80 Ribes rubrum L. cultivated currant RIUV80 Ribes uva-crispa L. European gooseberry RIUVS Ribes uva-crispa L. var. sativum DC. European gooseberry RIGR3 Richardia grandiflora (Cham. & Schlecht.) J.A. & J.H. Schultes largeflower Mexican clover RIHU3 Richardia humistrata (Cham. & Schlecht.) J.A. & J.H. Schultes South American Mexican clover RICO3 Ricinus communis L. castorbean RORE Roemeria refracta DC. spotted Asian poppy RORO Romulea rosea (L.) Ecklon rosy sandcrocus ROROA Romulea rosea (L.) Ecklon var. australis (Ewart) de Vos rosy sandcrocus ROAM Rorippa amphibia (L.) Bess. great yellowcress ROAU Rorippa austriaca (Crantz) Bess. Austrian yellowcress ROCA8 Rorippa cantoniensis (Lour.) Ohwi Chinese yellowcress ROGL2 Rorippa globosa (Turcz. ex Fisch. & C.A. Mey.) Hayek globe yellowcress ROIN Rorippa indica (L.) Hiern. variableleaf yellowcress ROINA Rorippa indica (L.) Hiern. var. apetala Hochr. variableleaf yellowcress ROINI Rorippa indica (L.) Hiern. var. indica variableleaf yellowcress ROMI3 Rorippa microphylla (Boenn. ex Reichenb.) Hyl. ex A.& D. Löve onerow yellowcress ROPR Rorippa prostrata (Bergeret) Schinz & Thellung prostrate yellowcress ROSA Rorippa sarmentosa (G. Forst. ex DC.) J.F. Macbr. longrunner ROST3 Rorippa ×sterilis Airy-Shaw [microphylla × nasturtium-aquaticum] ROSY Rorippa sylvestris (L.) Bess. creeping yellowcress ROAL3 Rosa ×alba L. (pro sp.) [arvensis × gallica] white rose of York ROBO3 Rosa ×borboniana Desportes (pro sp.) [chinensis × damascena] Bourbon rose ROBR Rosa bracteata J.C. Wendl. Macartney rose ROCA3 Rosa canina L. dog rose ROCE Rosa centifolia L. cabbage rose ROCH Rosa chinensis Jacq. Chinese rose ROCI Rosa cinnamomea L. cinnamon rose RODA Rosa ×damascena P. Mill. (pro sp.) [gallica × moschata] damask rose RODU80 Rosa dumetorum Thuill. corymb rose ROEG Rosa eglanteria L. sweetbriar rose ROGA Rosa gallica L. French rose ROGAG Rosa gallica L. var. gallica French rose ROGAO Rosa gallica L. var. officinalis Thory French rose ROHA4 Rosa ×harisonii Rivers [foetida × spinosissima] ROIN5 Rosa indica L. cyme rose ROLA Rosa laevigata Michx. Cherokee rose ROMA81 Rosa majalis J. Herrm. double cinnamon rose ROMI Rosa micrantha Borrer ex Sm. smallflower sweetbrier ROMO Rosa moschata J. Herrm. musk rose ROMU Rosa multiflora Thunb. ex Murr. multiflora rose ROOD Rosa odorata (Andr.) Sweet tea rose RORE3 Rosa ×rehderiana Blackb. [chinensis × multiflora] polyantha rose RORU2 Rosa rubrifolia Vill. redleaf rose RORU Rosa rugosa Thunb. rugosa rose ROSE3 Rosa sempervirens L. evergreen rose ROSE8 Rosa serafinii Viviani Mediterranean rose ROSP2 Rosa spinosissima L. Scots rose ROTO Rosa tomentosa Sm. whitewoolly rose ROVI80 Rosa villosa L. apple rose ROWI Rosa wichuraiana Crépin memorial rose ROXA2 Rosa xanthina Lindl. ROOF Rosmarinus officinalis L. rosemary ROCR3 Rostraria cristata (L.) Tzvelev Mediterranean hairgrass ROIN3 Rotala indica (Willd.) Koehne Indian toothcup ROCO6 Rottboellia cochinchinensis (Lour.) W.D. Clayton itchgrass RUTI Rubia tinctoria L. madder RUAR9 Rubus armeniacus Focke Himalayan blackberry RUBI Rubus bifrons Vest ex Tratt. Himalayan berry RUCA Rubus caesius L. European dewberry RUCO4 Rubus coronarius (Sims) Sweet cultivated raspberry RUDI2 Rubus discolor Weihe & Nees Himalayan blackberry RUEL3 Rubus ellipticus Sm. yellow Himalayan raspberry RUELO Rubus ellipticus Sm. var. obcordatus Focke yellow Himalayan raspberry RUGE Rubus geniculatus Kaltenb. false Himalayan berry RUIL Rubus illecebrosus Focke strawberry raspberry RULA Rubus laciniatus Willd. cutleaf blackberry RULI2 Rubus linkianus Ser. Link's blackberry RUMA Rubus macrophyllus Weihe & Nees largeleaf blackberry RUNI4 Rubus niveus Thunb. snowpeaks raspberry RUPH Rubus phoenicolasius Maxim. wine raspberry RURO Rubus rosifolius Sm. West Indian raspberry RUSI4 Rubus sieboldii Blume palmleaf dewberry RUTH2 Rubus thyrsoides C. Wimm. Great Britain blackberry RUTO2 Rubus tomentosus Borkh. woolly blackberry RUTOC Rubus tomentosus Borkh. var. canescens Wirtg. woolly blackberry RUTR5 Rubus triphyllus Thunb. threeleaf blackberry RUUL Rubus ulmifolius Schott elmleaf blackberry RUULI Rubus ulmifolius Schott var. inermis (Willd.) Focke elmleaf blackberry RUVE Rubus vestitus Weihe & Nees European blackberry RUBR12 Ruellia brevifolia (Pohl) Ezcurra tropical wild petunia RUBR Ruellia brittoniana Leonard Britton's wild petunia RUCH6 Ruellia chartacea (T. Anders.) Wasshausen RUCI3 Ruellia ciliatiflora Hook. hairyflower wild petunia RUDE13 Ruellia devosiana hort. Makoy ex E. Murr. Brazilian wild petunia RUPR18 Ruellia prostrata Poir. prostrate wild petunia RUAC2 Rumex acetosa L. garden sorrel‡ RUACA Rumex acetosa L. ssp. acetosa garden sorrel RUACT Rumex acetosa L. ssp. thyrsiflorus (Fingerhuth) Hayek garden sorrel RUAC3 Rumex acetosella L. common sheep sorrel RUAC6 Rumex ×acutus L. (pro sp.) [crispus × obtusifolius] RUAL3 Rumex alpinus L. Munk's rhubarb RUBR2 Rumex brownei Campd. Browne's dock RUBU3 Rumex bucephalophorus L. red dock RUCO7 Rumex ×confusus Simonkai [crispus × patientia] RUCO2 Rumex conglomeratus Murr. clustered dock RUCR Rumex crispus L. curly dock RUCRC Rumex crispus L. ssp. crispus curly dock RUCRF Rumex crispus L. ssp. fauriei (Rech. f.) Mosyakin and W.L. Wagner curly dock RUCR2 Rumex cristatus DC. Greek dock RUDE3 Rumex dentatus L. toothed dock RUDI12 Rumex ×dissimilis Rech. f. (pro sp.) [crispus × orbiculatus] RUFR7 Rumex frutescens Thouars wedgeleaf dock RUKE Rumex kerneri Borbás Kerner's dock RULO2 Rumex longifolius DC. dooryard dock RUOB3 Rumex obovatus Danser tropical dock RUOB Rumex obtusifolius L. bitter dock RUPA24 Rumex paraguayensis Parodi Paraguayan dock RUPA5 Rumex patientia L. patience dock RUPS Rumex pseudonatronatus Borbás field dock RUPU3 Rumex pulcher L. fiddle dock RUSA2 Rumex sanguineus L. redvein dock RUSI Rumex sibiricus Hultén Siberian dock RUST4 Rumex stenophyllus Ledeb. narrowleaf dock RUEQ Russelia equisetiformis Schlecht. & Cham. fountainbush RUCH4 Ruta chalepensis L. fringed rue RUGR3 Ruta graveolens L. common rue RYPI Rytidosperma pilosum (R. Br.) Connor & Edgar hairy wallaby grass RYSE Rytidosperma semiannulare (Labill.) Connor & Edgar Tasmanian wallaby grass

† 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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