| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| RULO2 | Rumex longifolius DC. | dooryard dock | Polygonaceae
|
| RUMAF | Rumex maritimus L. ssp. fueginus (Phil.) Hult�n | Rumex maritimus | Polygonaceae
|
| RUMAA | Rumex maritimus L. var. athrix St. John | Rumex maritimus | Polygonaceae
|
| RUMAF2 | Rumex maritimus L. var. fueginus (Phil.) Dusen | Rumex maritimus | Polygonaceae
|
| RUMAP2 | Rumex maritimus L. var. persicarioides (L.) R.S. Mitchell | Rumex maritimus | Polygonaceae
|
| RUMA4 | Rumex maritimus L. | golden dock | Polygonaceae
|
| RUMEA | Rumex mexicanus Meisn. var. angustifolius (Meisn.) Boivin | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUMES2 | Rumex mexicanus Meisn. var. sibiricus (Hult�n) Boivin | Rumex sibiricus | Polygonaceae
|
| RUMES | Rumex mexicanus Meisn. var. strictus M.E. Peck | Rumex salicifolius var. denticulatus | Polygonaceae
|
| RUMES3 | Rumex mexicanus Meisn. var. subarcticus (Lepage) Boivin | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUMET | Rumex mexicanus Meisn. var. transitorius (Rech. f.) Boivin | Rumex salicifolius var. transitorius | Polygonaceae
|
| RUME2 | Rumex mexicanus Meisn. | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUNE4 | Rumex nematopodus Rech. f. | Arizona dock | Polygonaceae
|
| RUOB3 | Rumex obovatus Danser | tropical dock | Polygonaceae
|
| RUOBA | Rumex obtusifolius L. ssp. agrestis (Fries) Danser | Rumex obtusifolius | Polygonaceae
|
| RUOBS | Rumex obtusifolius L. ssp. sylvestris (Wallr.) Rech. f. | Rumex obtusifolius | Polygonaceae
|
| RUOBS2 | Rumex obtusifolius L. var. sylvestris (Wallr.) Koch | Rumex obtusifolius | Polygonaceae
|
| RUOB | Rumex obtusifolius L. | bitter dock | Polygonaceae
|
| RUOCF | Rumex occidentalis S. Wats. var. fenestratus (Greene) Lepage | Rumex aquaticus var. fenestratus | Polygonaceae
|
| RUOCL | Rumex occidentalis S. Wats. var. labradoricus (Rech. f.) Lepage | Rumex aquaticus var. fenestratus | Polygonaceae
|
| RUOCP | Rumex occidentalis S. Wats. var. procerus (Greene) J.T. Howell | Rumex aquaticus var. fenestratus | Polygonaceae
|
| RUOC3 | Rumex occidentalis S. Wats. | Rumex aquaticus var. fenestratus | Polygonaceae
|
| RUORB | Rumex orbiculatus Gray var. borealis Rech. f. | greater water dock | Polygonaceae
|
| RUORO | Rumex orbiculatus Gray var. orbiculatus | greater water dock | Polygonaceae
|
| RUOR2 | Rumex orbiculatus Gray | greater water dock | Polygonaceae
|
| RUOR3 | Rumex orthoneurus Rech. f. | Chiricahua Mountain dock | Polygonaceae
|
| RUPA4 | Rumex pallidus Bigelow | seaside dock | Polygonaceae
|
| RUPA24 | Rumex paraguayensis Parodi | Paraguayan dock | Polygonaceae
|
| RUPA5 | Rumex patientia L. | patience dock | Polygonaceae
|
| RUPAG2 | Rumex paucifolius Nutt. ssp. gracilescens (Rech. f.) Rech. f. | alpine sheep sorrel | Polygonaceae
|
| RUPAP | Rumex paucifolius Nutt. ssp. paucifolius | alpine sheep sorrel | Polygonaceae
|
| RUPAG4 | Rumex paucifolius Nutt. var. gracilescens Rech. f. | Rumex paucifolius ssp. gracilescens | Polygonaceae
|
| RUPA6 | Rumex paucifolius Nutt. | alpine sheep sorrel | Polygonaceae
|
| RUPE11 | Rumex persicarioides L. | Rumex maritimus | Polygonaceae
|
| RUPR16 | Rumex praecox Rydb. | Rumex densiflorus | Polygonaceae
|
| RUPR12 | Rumex pratensis Mert. & Koch | Rumex acutus | Polygonaceae
|
| RUPS | Rumex pseudonatronatus Borb�s | field dock | Polygonaceae
|
| RUPUD | Rumex pulcher L. ssp. divaricatus (L.) Murb. | Rumex pulcher | Polygonaceae
|
| RUPU3 | Rumex pulcher L. | fiddle dock | Polygonaceae
|
| RUPY | Rumex pycnanthus Rech. f. | Rumex densiflorus | Polygonaceae
|
| RUQU3 | Rumex quadrangulivalvis (Danser) Rech. f. | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUSAT2 | Rumex salicifolius Weinm. ssp. triangulivalvis Danser | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUSAA | Rumex salicifolius Weinm. var. angustivalvis Danser | willow dock | Polygonaceae
|
| RUSAC | Rumex salicifolius Weinm. var. crassus (Rech. f.) J.T. Howell | willow dock | Polygonaceae
|
| RUSAD | Rumex salicifolius Weinm. var. denticulatus Torr. | toothed willow dock | Polygonaceae
|
| RUSAL | Rumex salicifolius Weinm. var. lacustris (Greene) Hickman | lake willow dock | Polygonaceae
|
| RUSAM | Rumex salicifolius Weinm. var. mexicanus (Meisn.) C.L. Hitchc. | Mexican dock | Polygonaceae
|
| RUSAM2 | Rumex salicifolius Weinm. var. montigenitus Jepson | Rumex salicifolius var. denticulatus | Polygonaceae
|
| RUSAS | Rumex salicifolius Weinm. var. salicifolius | willow dock | Polygonaceae
|
| RUSAT4 | Rumex salicifolius Weinm. var. transitorius (Rech. f.) Hickman | willow dock | Polygonaceae
|
| RUSAT3 | Rumex salicifolius Weinm. var. triangulivalvis (Danser) C.L. Hitchc. | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUSA | Rumex salicifolius Weinm. | willow dock | Polygonaceae
|
| RUSA2 | Rumex sanguineus L. | redvein dock | Polygonaceae
|
| RUSC8 | Rumex scutatus L. | French sorrel | Polygonaceae
|
| RUSI | Rumex sibiricus Hult�n | Siberian dock | Polygonaceae
|
| RUSK | Rumex skottsbergii O.& I. Deg. | lava dock | Polygonaceae
|
| RUSP9 | Rumex spinosus L. | Emex spinosa | Polygonaceae
|
| RUSP2 | Rumex spiralis Small | winged dock | Polygonaceae
|
| RUST4 | Rumex stenophyllus Ledeb. | narrowleaf dock | Polygonaceae
|
| RUSU2 | Rumex subalpinus M.E. Jones | subalpine dock | Polygonaceae
|
| RUSU14 | Rumex subarcticus LePage | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUTE5 | Rumex tenuifolius (Wallr.) A. L�ve | Rumex acetosella | Polygonaceae
|
| RUTH3 | Rumex thyrsiflorus Fingerhuth | Rumex acetosa ssp. thyrsiflorus | Polygonaceae
|
| RUTO | Rumex tomentellus Rech. f. | Willow Creek dock | Polygonaceae
|
| RUTR7 | Rumex transitorius Rech. f. | Rumex salicifolius var. transitorius | Polygonaceae
|
| RUTRO | Rumex triangulivalvis (Danser) Rech. f. var. oreolapathum Rech. f. | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUTR3 | Rumex triangulivalvis (Danser) Rech. f. | Rumex salicifolius var. mexicanus | Polygonaceae
|
| RUUT | Rumex utahensis Rech. f. | Rumex salicifolius var. denticulatus | Polygonaceae
|
| RUVE2 | Rumex venosus Pursh | veiny dock | Polygonaceae
|
| RUVE3 | Rumex verticillatus L. | swamp dock | Polygonaceae
|
| RUVI | Rumex violascens Rech. f. | violet dock | Polygonaceae
|
| RUMEX | Rumex L. | dock | Polygonaceae
|
| RUAD | Rumohra adiantiformis (G. Forst.) Ching | iron fern | Dryopteridaceae
|
| RUCA6 | Rumohra carvifolia (Kunze) Ching | Arachniodes carvifolia | Dryopteridaceae
|
| RUMOH | Rumohra Raddi | rumohra | Dryopteridaceae
|
| RULO9 | Runyonia longiflora Rose | Manfreda longiflora | Agavaceae
|
| RUHA5 | Rupertia hallii (Rydb.) J. Grimes | Hall's California tea | Fabaceae
|
| RUPH3 | Rupertia physodes (Dougl. ex Hook.) J. Grimes | forest scurfpea | Fabaceae
|
| RURI2 | Rupertia rigida (Parish) J. Grimes | Parish's California tea | Fabaceae
|
| RUPER | Rupertia J. Grimes | rupertia | Fabaceae
|
| RUAN4 | Ruppia anomala Ostenf. | yerba de zanja | Ruppiaceae
|
| RUCIO | Ruppia cirrhosa (Petag.) Grande ssp. occidentalis (S. Wats.) A.& D. L�ve | Ruppia cirrhosa | Ruppiaceae
|
| RUCI2 | Ruppia cirrhosa (Petag.) Grande | spiral ditchgrass | Ruppiaceae
|
| RUMAB | Ruppia maritima L. var. brevirostris Agardh | Ruppia maritima | Ruppiaceae
|
| RUMAE | Ruppia maritima L. var. exigua Fern. & Wieg. | Ruppia maritima | Ruppiaceae
|
| RUMAI | Ruppia maritima L. var. intermedia (Thed.) Aschers. & Graebn. | Ruppia maritima | Ruppiaceae
|
| RUMAL | Ruppia maritima L. var. longipes Hagstr. | Ruppia maritima | Ruppiaceae
|
| RUMAO2 | Ruppia maritima L. var. obliqua (Schur) Aschers. & Graebn. | Ruppia maritima | Ruppiaceae
|
| RUMAO | Ruppia maritima L. var. occidentalis (S. Wats.) Graebn. | Ruppia cirrhosa | Ruppiaceae
|
| RUMAP | Ruppia maritima L. var. pacifica St. John & Fosberg | Ruppia maritima | Ruppiaceae
|
| RUMAR | Ruppia maritima L. var. rostrata Agardh | Ruppia maritima | Ruppiaceae
|
| RUMAS | Ruppia maritima L. var. spiralis Morris | Ruppia cirrhosa | Ruppiaceae
|
| RUMAS2 | Ruppia maritima L. var. subcapitata Fern. & Wieg. | Ruppia maritima | Ruppiaceae
|
| RUMA5 | Ruppia maritima L. | widgeongrass | Ruppiaceae
|
| RUOC6 | Ruppia occidentalis S. Wats. | Ruppia cirrhosa | Ruppiaceae
|
| RUPE14 | Ruppia pectinata Rydb. | Ruppia maritima | Ruppiaceae
|
| RUSP5 | Ruppia spiralis L. ex Dumort. | Ruppia cirrhosa | Ruppiaceae
|
| RUPPI | Ruppia L. | widgeonweed | Ruppiaceae
|
| RUEQ | Russelia equisetiformis Schlecht. & Cham. | fountainbush | Scrophulariaceae
|
| RUJU4 | Russelia juncea Zucc. | Russelia equisetiformis | Scrophulariaceae
|
| RUSSE | Russelia Jacq. | russelia | Scrophulariaceae
|