| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ROBLG | Rosa blanda Ait. var. glabra Crépin | smooth rose | Rosaceae
|
| ROBLG2 | Rosa blanda Ait. var. glandulosa Schuette | smooth rose | Rosaceae
|
| ROBLH | Rosa blanda Ait. var. hispida Farw. | hispid rose | Rosaceae
|
| ROBL | Rosa blanda Ait. | smooth rose | Rosaceae
|
| ROBO3 | Rosa ×borboniana Desportes (pro sp.) | Bourbon rose | Rosaceae
|
| ROBO5 | Rosa bourgeauiana Crépin | Rosa acicularis ssp. sayi | Rosaceae
|
| ROBR | Rosa bracteata J.C. Wendl. | Macartney rose | Rosaceae
|
| ROBR3 | Rosa bridgesii Crépin | pygmy rose | Rosaceae
|
| ROCA10 | Rosa caeruleimontana St. John | Rosa nutkana var. hispida | Rosaceae
|
| ROCA2 | Rosa californica Cham. & Schlecht. | California wildrose | Rosaceae
|
| ROCAD2 | Rosa canina L. var. dumetorum Baker | Rosa canina | Rosaceae
|
| ROCA3 | Rosa canina L. | dog rose | Rosaceae
|
| ROCAC | Rosa carolina L. var. carolina | Carolina rose | Rosaceae
|
| ROCAD | Rosa carolina L. var. deamii (Erlanson) Deam | Deam's rose | Rosaceae
|
| ROCAG | Rosa carolina L. var. glandulosa (Crépin) Farw. | Rosa carolina var. carolina | Rosaceae
|
| ROCAG2 | Rosa carolina L. var. grandiflora (Baker) Rehd. | Rosa carolina var. carolina | Rosaceae
|
| ROCAL | Rosa carolina L. var. lyonii (Pursh) Palmer & Steyermark | Rosa carolina var. villosa | Rosaceae
|
| ROCAO | Rosa carolina L. var. obovata (Raf.) Deam | Rosa carolina var. carolina | Rosaceae
|
| ROCAS | Rosa carolina L. var. sabulosa Erlanson | Carolina rose | Rosaceae
|
| ROCAS2 | Rosa carolina L. var. setigera Crépin | Carolina rose | Rosaceae
|
| ROCAV | Rosa carolina L. var. villosa (Best) Rehd. | Carolina rose | Rosaceae
|
| ROCA4 | Rosa carolina L. | Carolina rose | Rosaceae
|
| ROCA9 | Rosa cathayensis (Rehd. & Wilson) Bailey | Rosa multiflora | Rosaceae
|
| ROCEC2 | Rosa centifolia L. var. cristata Prev. | Rosa centifolia | Rosaceae
|
| ROCEM8 | Rosa centifolia L. var. muscosa (Ait.) Ser. | Rosa centifolia | Rosaceae
|
| ROCE | Rosa centifolia L. | cabbage rose | Rosaceae
|
| ROCH | Rosa chinensis Jacq. | Chinese rose | Rosaceae
|
| ROCI | Rosa cinnamomea L. | cinnamon rose | Rosaceae
|
| ROCI2 | Rosa cinnamomea sensu L. 1759, non 1753 | Rosa majalis | Rosaceae
|
| ROCO8 | Rosa collaris Rydb. | Rosa acicularis ssp. sayi | Rosaceae
|
| ROCO9 | Rosa conjuncta Rydb. | Rosa arkansana var. suffulta | Rosaceae
|
| ROCO4 | Rosa corymbifera Borkh. | Rosa dumetorum | Rosaceae
|
| ROCO10 | Rosa covillei Greene | Rosa woodsii var. ultramontana | Rosaceae
|
| RODA | Rosa ×damascena P. Mill. (pro sp.) | damask rose | Rosaceae
|
| RODU | Rosa ×dulcissima Lunell (pro sp.) | | Rosaceae
|
| RODU80 | Rosa dumetorum Thuill. | corymb rose | Rosaceae
|
| RODU3 | Rosa durandii Crépin | Rosa nutkana var. nutkana | Rosaceae
|
| ROEG | Rosa eglanteria L. | sweetbriar rose | Rosaceae
|
| ROEN | Rosa engelmannii S. Wats. | Rosa acicularis ssp. sayi | Rosaceae
|
| ROFE2 | Rosa fendleri Crépin | Rosa woodsii var. woodsii | Rosaceae
|
| ROFL2 | Rosa floridana Rydb. | Rosa palustris | Rosaceae
|
| ROFO | Rosa foliolosa Nutt. ex Torr. & Gray | white prairie rose | Rosaceae
|
| ROGAG | Rosa gallica L. var. gallica | French rose | Rosaceae
|
| ROGAO | Rosa gallica L. var. officinalis Thory | French rose | Rosaceae
|
| ROGA | Rosa gallica L. | French rose | Rosaceae
|
| ROGL80 | Rosa glauca Pourret | Rosa rubrifolia | Rosaceae
|
| ROGR2 | Rosa gratissima Greene | Rosa woodsii var. gratissima | Rosaceae
|
| ROGYP2 | Rosa gymnocarpa Nutt. var. pubescens S.Wats. | Rosa bridgesii | Rosaceae
|
| ROGY | Rosa gymnocarpa Nutt. | dwarf rose | Rosaceae
|
| ROHA4 | Rosa ×harisonii Rivers | | Rosaceae
|
| ROHO3 | Rosa ×housei Erlanson (pro sp.) | | Rosaceae
|
| ROHU3 | Rosa hugonis Hemsl. | Rosa xanthina | Rosaceae
|
| ROHY2 | Rosa hypoleuca Woot. & Standl. | Rosa woodsii var. woodsii | Rosaceae
|
| ROIG | Rosa ignota Shinners | Rosa foliolosa | Rosaceae
|
| ROIN5 | Rosa indica L. | cyme rose | Rosaceae
|
| ROJO | Rosa johannensis Fern. | Rosa blanda var. glabra | Rosaceae
|
| ROJO2 | Rosa jonesii St. John | Rosa nutkana var. hispida | Rosaceae
|
| ROLA | Rosa laevigata Michx. | Cherokee rose | Rosaceae
|
| ROLA3 | Rosa lancifolia Small | Rosa palustris | Rosaceae
|
| ROLA4 | Rosa lapwaiensis St. John | Rosa woodsii var. ultramontana | Rosaceae
|
| ROLU2 | Rosa lunellii Greene | Rosa arkansana var. arkansana | Rosaceae
|
| ROLY3 | Rosa lyonii Pursh | Rosa carolina var. villosa | Rosaceae
|
| ROMA4 | Rosa macdougalii Holz. | Rosa nutkana var. hispida | Rosaceae
|
| ROMA5 | Rosa macounii Greene | Rosa woodsii var. woodsii | Rosaceae
|
| ROMA81 | Rosa majalis J. Herrm. | double cinnamon rose | Rosaceae
|
| ROMA3 | Rosa manca Greene | Mancos rose | Rosaceae
|
| ROME | Rosa megalantha G.N. Jones | Rosa nutkana var. hispida | Rosaceae
|
| ROMI | Rosa micrantha Borrer ex Sm. | smallflower sweetbrier | Rosaceae
|
| ROMI80 | Rosa minutifolia Engelm. | Baja rose | Rosaceae
|
| ROMI6 | Rosa mirifica Greene | Rosa stellata ssp. mirifica var. mirifica | Rosaceae
|
| ROMO2 | Rosa mohavensis Parish | Rosa woodsii var. glabrata | Rosaceae
|
| ROMO | Rosa moschata J. Herrm. | musk rose | Rosaceae
|
| ROMU | Rosa multiflora Thunb. ex Murr. | multiflora rose | Rosaceae
|
| ROMY | Rosa ?myriadenia Greene | glandular rose | Rosaceae
|
| RONE2 | Rosa neomexicana Cockerell | Rosa woodsii var. woodsii | Rosaceae
|
| RONI | Rosa nitida Willd. | shining rose | Rosaceae
|
| RONUH | Rosa nutkana K. Presl var. hispida Fern. | bristly Nootka rose | Rosaceae
|
| RONUM | Rosa nutkana K. Presl var. muriculata (Greene) G.N. Jones | Nootka rose | Rosaceae
|
| RONUN | Rosa nutkana K. Presl var. nutkana | Nootka rose | Rosaceae
|
| RONUS | Rosa nutkana K. Presl var. setosa G.N. Jones | Nootka rose | Rosaceae
|
| RONU | Rosa nutkana K. Presl | Nootka rose | Rosaceae
|
| ROOB2 | Rosa obtusiuscula Rydb. | Appalachian Valley rose | Rosaceae
|
| ROOD | Rosa odorata (Andr.) Sweet | tea rose | Rosaceae
|
| ROPA6 | Rosa palmeri Rydb. | Rosa carolina var. villosa | Rosaceae
|
| ROPA4 | Rosa ×palustriformis Rydb. (pro sp.) | | Rosaceae
|
| ROPAD3 | Rosa palustris Marsh. var. dasistema (Raf.) Palmer & Steyermark | Rosa palustris | Rosaceae
|
| ROPA | Rosa palustris Marsh. | swamp rose | Rosaceae
|
| ROPE2 | Rosa pecosensis Cockerell | Rosa woodsii var. ultramontana | Rosaceae
|
| ROPI4 | Rosa pimpinellifolia L. | Rosa spinosissima | Rosaceae
|
| ROPI | Rosa ?pinetorum Heller | pine rose | Rosaceae
|
| ROPIR | Rosa pisocarpa Gray var. rivalis (Eastw.) Jepson | Rosa pisocarpa | Rosaceae
|
| ROPI2 | Rosa pisocarpa Gray | cluster rose | Rosaceae
|
| ROPO3 | Rosa pomifera Herrm. | Rosa villosa | Rosaceae
|
| ROPR2 | Rosa pratincola Greene | Rosa arkansana var. suffulta | Rosaceae
|
| RORE3 | Rosa ×rehderiana Blackb. | polyantha rose | Rosaceae
|
| RORI | Rosa rivalis Eastw. | Rosa pisocarpa | Rosaceae
|
| RORO3 | Rosa rousseauiorum Boivin | Rosa blanda var. blanda | Rosaceae
|
| RORU82 | Rosa rubiginosa L. | Rosa eglanteria | Rosaceae
|
| RORU2 | Rosa rubrifolia Vill. | redleaf rose | Rosaceae
|
| RORU3 | Rosa ×rudiuscula Greene (pro sp.) | | Rosaceae
|
| RORU | Rosa rugosa Thunb. | rugosa rose | Rosaceae
|