Plant Database (by name)

racomitrium moss - Racomitrium microcarpon (Hedw.) Brid.

racomitrium moss - Racomitrium sudeticum (Funck) Bruch & Schimp. in B.S.G.

radish - Raphanus L.

ragged robin - Lychnis flos-cuculi L.

ragged rockflower - Crossosoma bigelovii S. Wats.

ragleaf bahia - Bahia dissecta (Gray) Britt.

ragweed sagebrush - Artemisia franserioides Greene

ragwort - Senecio L.

Raiche's manzanita - Arctostaphylos stanfordiana Parry ssp. raichei W. Knight

Railroad Valley globemallow - Sphaeralcea caespitosa M. E. Jones var. caespitosa

rainbow iris - Iris hartwegii Baker

Rainbow manzanita - Arctostaphylos rainbowensis J.E. Keeley & A. Massihi

Rainier pleated gentian - Gentiana calycosa Griseb.

Rainier violet - Viola trinervata (T.J. Howell) T.J. Howell ex Gray

raintree - Brunfelsia L.

Ralph's desertwillow - Pittosporum ralphii Kirk

ram's head lady's slipper - Cypripedium arietinum Ait. f.

ram's horn - Proboscidea louisianica (P. Mill.) Thellung

ram's horn - Proboscidea louisianica (P. Mill.) Thellung ssp. fragrans (Lindl.) Bretting

rampion bellflower - Campanula rapunculoides L.

Rand's goldenrod - Solidago simplex Kunth ssp. randii (Porter) Ringius var. gillmanii (Gray) Ringius

Rand's goldenrod - Solidago simplex Kunth ssp. randii (Porter) Ringius var. racemosa (Greene) Ringius

Rand's goldenrod - Solidago simplex Kunth ssp. randii (Porter) Ringius var. randii (Porter) Kartesz & Gandhi

Rangoon creeper - Quisqualis indica L.

Rankin's trumpetflower - Gelsemium rankinii Small

rannoch-rush - Scheuchzeria palustris L.

rare clubmoss - Lycopodium obscurum L.

rasp-leaf pelargonium - Pelargonium radens H.E. Moore

rat-tail fescue - Vulpia myuros (L.) K.C. Gmel.

rattlebox - Sesbania punicea (Cav.) Benth.

rattlesnake brome - Bromus briziformis Fisch. & C.A. Mey.

rattlesnake fern - Botrychium virginianum (L.) Sw.

rattlesnake mannagrass - Glyceria canadensis (Michx.) Trin.

rattlesnakemaster - Eryngium aquaticum L.

rattlesnakemaster - Eryngium aquaticum L. var. aquaticum

rattlesnakeweed - Hieracium venosum L.

rattleweed - Crotalaria retusa L.

Ravenel's rosette grass - Dichanthelium ravenelii (Scribn. & Merr.) Gould

ravenfoot sedge - Carex crus-corvi Shuttlw. ex Kunze

ravennagrass - Saccharum ravennae (L.) L.

ravine fescue - Festuca sororia Piper

rayless alkali aster - Symphyotrichum ciliatum (Ledeb.) Nesom

rayless arnica - Arnica discoidea Benth.

rayless arnica - Arnica ×diversifolia Greene (pro sp.) [amplexicaulis or mollis × cordifolia or latifolia]

rayless shaggy fleabane - Erigeron aphanactis (Gray) Greene

rayless tansyaster - Machaeranthera grindelioides (Nutt.) Shinners var. depressa (Maguire) Cronq. & Keck

rayless tansyaster - Machaeranthera grindelioides (Nutt.) Shinners var. grindelioides

Raynolds' sedge - Carex raynoldsii Dewey

rebutia - Rebutia K. Schum.

recurved small limestone moss - Seligeria recurvata (Hedw.) Bruch & Schimp. in B.S.G.