Imperiled
Perennial; stems several, reddish, ascending, up to 1.2 m long, the tallest plants often supported by adjacent vegetation; leaves to 12 cm long, pinnately compound, with 15-25 ovate leaflets, sparsely pubescent with fine, straight, appressed hairs; f...
Perennial; stems stout, ascending, often purplish tinged; leaves pinnately compound, mostly 15-29 foliate, 4-18 cm long; leaflets 5-20 mm long, elliptic to ovate, flat, pubescent on both surfaces, hairs straight, lying flat against the leaf surface; ...
Plants perennial; pubescence gray-villous, villosulous, or subtomentose, the longer hairs basifixed, the shorter dolabriform; stems prostrate, divaricately branched, 1-5.5 dm long; stipules near base of stem 2.5-8 mm long, fully encircling the stem; ...
Tufted perennial from a taproot; stems numerous, wiry, 1-4 cm long; herbage strigulose with basifixed to obscurely dolabriform hairs; leaves crowded, 2-4 cm long; leaflets 9-15, 2.5-8 mm long, 1.5-2 times longer than wide; stipules connate (fused, fo...
Tufted perennial herb; stems numerous, ascending, 1-5 cm long, arising from a taproot; herbage gray-strigose with dolabriform hairs; stipules of the lower nodes connate; leaves pinnately compound, 2.5-8.5 cm long; stalks long, wiry, and sometimes per...
Rhizomatous perennial from subterranean crown; stems several, to 5 dm long, decumbent and radiating, branching from lower nodes, forming broad, depressed clumps; herbage greenish-gray; lower stipules connate; leaves 2.5-10 cm long; leaflets numerous,...
Gray-green shrub to 1 m tall, much-branched; leaves short-petiolate or sessile, elliptic-ovate to narrowly oblong, about 1-2 cm long, grayish with a fine scurf; plants unisexual, the flowers in small clusters in more or less profuse terminal panicles...
Matted perennial from woody rootstocks; stems to 5 cm high; sparsely pubescent with ascending or loosely appressed hairs, terminated by a solitary flower head; basal rosettelike leaves clustered, spatulate or lance shaped, spiny at the tip, 1.5-6 mm ...
