Plant Database (by name)

roundleaf oxytheca - Oxytheca perfoliata Torr. & Gray

roundleaf phacelia - Phacelia rotundifolia Torr. ex S. Wats.

roundleaf ragwort - Packera obovata (Muhl. ex Willd.) W.A. Weber & A. Löve

roundleaf serviceberry - Amelanchier sanguinea (Pursh) DC.

roundleaf snowberry - Symphoricarpos rotundifolius Gray

roundleaf sundew - Drosera rotundifolia L.

roundleaf thoroughwort - Eupatorium rotundifolium L.

roundleaf thoroughwort - Eupatorium rotundifolium L. var. ovatum (Bigelow) Torr.

roundleaf thoroughwort - Eupatorium rotundifolium L. var. rotundifolium

roundleaf yellow violet - Viola rotundifolia Michx.

roundlobe hepatica - Hepatica nobilis Schreb. var. obtusa (Pursh) Steyermark

roundpod St. Johnswort - Hypericum cistifolium Lam.

roundseed panicgrass - Dichanthelium sphaerocarpon (Ell.) Gould var. isophyllum (Scribn.) Gould & C.A. Clark

roundseed panicgrass - Dichanthelium sphaerocarpon (Ell.) Gould var. sphaerocarpon

roundseed St. Johnswort - Hypericum sphaerocarpum Michx.

roundstem false foxglove - Agalinis gattingeri (Small) Small

roundtooth snakelily - Dichelostemma multiflorum (Benth.) Heller

roving sailor - Maurandella antirrhiniflora (Humb. & Bonpl. ex Willd.) Rothm.

royal catchfly - Silene regia Sims

royal fern - Osmunda regalis L.

royal larkspur - Delphinium variegatum Torr. & Gray

royal penstemon - Penstemon speciosus Dougl. ex Lindl.

royal poinciana - Delonix regia (Bojer ex Hook.) Raf.

rubber rabbitbrush - Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird ssp. nauseosa var. bigelovii (Gray) Nesom & Baird

rubber rabbitbrush - Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird ssp. nauseosa var. glabrata (Gray) Nesom & Baird

rubber rabbitbrush - Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird ssp. nauseosa var. nauseosa

rubber rabbitbrush - Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird ssp. consimilis (Greene) Nesom & Baird var. oreophila (A. Nels.) Nesom & Baird

rubber rabbitbrush - Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird ssp. nauseosa var. speciosa (Nutt.) Nesom & Baird

rubberweed - Hymenoxys Cass.

rubia - Rubia L.

ruby chalice clarkia - Clarkia rubicunda (Lindl.) H.F. & M.E. Lewis

Ruby Mountain buckwheat - Eriogonum kingii Torr. & Gray

Ruby Mountain primrose - Primula capillaris N.& A. Holmgren

rue anemone - Thalictrum thalictroides (L.) Eames & Boivin

rufous bulrush - Scirpus pendulus Muhl.

Rugel's anomodon moss - Anomodon rugelii (C. Müll.) Keissl.

Rugel's Indianplantain - Rugelia nudicaulis Shuttlw. ex Chapman

rugosa rose - Rosa rugosa Thunb.

running buffalo clover - Trifolium stoloniferum Muhl. ex Eat.

running clubmoss - Lycopodium clavatum L.

running giant bamboo - Phyllostachys vivax McClure

running oak - Quercus pumila Walt.

running serviceberry - Amelanchier stolonifera Wieg.

running strawberry bush - Euonymus obovatus Nutt.

Rusby's milkweed - Asclepias rusbyi (Vail) Woods.

rush - Juncus L.

rush milkweed - Asclepias subulata Dcne.

rush skeletonplant - Lygodesmia juncea (Pursh) D. Don ex Hook.

rushy milkvetch - Astragalus lonchocarpus Torr.

russet buffaloberry - Shepherdia canadensis (L.) Nutt.