Plant Database (by name)

richwoods sedge - Carex oligocarpa Schkuhr ex Willd.

Riddell's goldenrod - Oligoneuron riddellii (Frank ex Riddell) Rydb.

Riddell's ragwort - Senecio riddellii Torr. & Gray

ridged yellow flax - Linum striatum Walt.

rigid aloina moss - Aloina rigida (Hedw.) Limpr.

rigid didymodon moss - Didymodon rigidulus Hedw.

rigid didymodon moss - Didymodon rigidulus Hedw. var. gracilis (Schleich. ex Hook. & Grev.) Zand.

rigid Indian paintbrush - Castilleja rigida Eastw.

rigid sedge - Carex tetanica Schkuhr

rim lichen - Lecanora Ach.

rimmed navel lichen - Rhizoplaca melanophthalma (DC.) Leuckert & Poelt

rimrock milkvetch - Astragalus desperatus M.E. Jones

ring muhly - Muhlenbergia torreyi (Kunth) A.S. Hitchc. ex Bush

Rio Grande bristlegrass - Setaria reverchonii (Vasey) Pilger ssp. ramiseta (Scribn.) W.E. Fox

Rio Grande copperlily - Habranthus tubispathus (L'Hér.) Traub

Rio Grande cottonwood - Populus deltoides Bartr. ex Marsh. ssp. wislizeni (S. Wats.) Eckenwalder

Rio Grande lovegrass - Eragrostis palmeri S. Wats.

Rio Grande phlox - Phlox glabriflora (Brand) Whitehouse ssp. littoralis (Cory) Wherry

ripgut brome - Bromus diandrus Roth ssp. rigidus (Roth) Lainz

Ripley's springparsley - Cymopterus ripleyi Barneby

river birch - Betula nigra L.

river bulrush - Schoenoplectus fluviatilis (Torr.) M.T. Strong

river hawthorn - Crataegus rivularis Nutt.

river redgum - Eucalyptus camaldulensis Dehnhardt

river sheoak - Casuarina cunninghamiana Miq.

riverbank grape - Vitis riparia Michx.

riverbank lupine - Lupinus rivularis Dougl. ex Lindl.

riverbank wildrye - Elymus riparius Wieg.

Rixford's rockwort - Scopulophila rixfordii (Brandeg.) Munz & Johnston

roadside agrimony - Agrimonia striata Michx.

roadside pepperweed - Lepidium ruderale L.

Robbins' milkvetch - Astragalus robbinsii (Oakes) Gray

Robbins' milkvetch - Astragalus robbinsii (Oakes) Gray var. minor (Hook.) Barneby

Robbins' pondweed - Potamogeton robbinsii Oakes

Robbins' spikerush - Eleocharis robbinsii Oakes

Robert geranium - Geranium robertianum L.

robin redbreast bush - Melaleuca lateritia A. Dietr.

robin runaway - Dalibarda repens L.

robin's plantain - Erigeron pulchellus Michx.

roble beech - Nothofagus obliqua (Birb.) Blume

robust Hoffmann's buckwheat - Eriogonum hoffmannii S. Stokes var. robustius S. Stokes

rock buckwheat - Eriogonum sphaerocephalum Dougl. ex Benth. var. sphaerocephalum

rock buttercup - Ranunculus micranthus Nutt.

rock clematis - Clematis columbiana (Nutt.) Torr. & Gray

rock clematis - Clematis columbiana (Nutt.) Torr. & Gray var. columbiana

rock clubmoss - Huperzia porophila (Lloyd & Underwood) Holub

rock dandelion - Taraxacum laevigatum (Willd.) DC.

rock draba - Draba arabisans Michx.

rock elm - Ulmus thomasii Sarg.

rock gooseberry - Ribes quercetorum Greene