On the Rare Plant Technical Council List
Rhizomatous perennial from subterranean caudex; stems few or several, to about 20 cm long, decumbent; herbage with short, stiff, spreading or incurved hairs 0.6-0.8 mm long; stipules connate; leaves 1.5-8 cm long; leaflets broad, glabrous or glabrate...
Perennial; stemless or stems numerous, short, 1-6 cm long; foliage grayish or green, strigulose with basifixed hairs; leaves 5-15 cm; leaflets 15-29, obovate to elliptic, 5-15 mm long, 1.5-3 times longer than wide; stipules free (not connate); inflor...
Perennial; stems short, prostrate, 1-6 cm long; herbage densely villous or villosulous with basifixed hairs; leaves 4-9 cm long; leaflets (7)9-15, often folded, 3-12 mm long, 2-3 times longer than wide; stipules free; inflorescences taller than or i...
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; ...
Low, subcaulescent perennial; basifixed pubescent; stems mostly 2-4 cm long, obscured by stipules and leaf bases; stipules 2-3 mm long, merely amplexicaul or the lowermost connate-sheathing; leaves 1-2.5 cm long; leaflets mostly 7-13, elliptic, obtus...
Diminutive, tufted, strigulose perennial forming clumps up to 3 dm across; stems up to 1 cm long; leaves crowded, up to 4 cm long, odd-pinnate, leaflets 7-11, oblong-elliptic, 0.7-2.0 mm long, petiole and rachis forming persistent spines after fall o...
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...
Perennial herb; stems 5-30 cm long, prostrate, silvery-hairy, bearing densely crowded small leaves; leaves 4-20 mm long, pinnately compound with 3-9 leaflets; flowers usually solitary or in pairs, pea-like, about 6 mm long, petals greenish-white with...