On the Rare Plant Technical Council List
Stout perennial herb; stems woody at the base, to 3 m tall with multiple ascending branches; leaves 1-5 cm long, rugose, with stellate hairs, 3-lobed, the lateral lobes shorter than the central lobe, and irregularly dentate; flowers numerous in elong...
Perennial herb; stems few, usually less than 1 m tall; branches ascending and mostly originating near the base; herbage grayish-canescent or subtomentose with soft stellate hairs; leaves 2-4 cm long, broadly ovate in outline, irregularly crenate to d...
Perennial herb with slender rhizomes; stems erect, growing in clumps, but not densely matted, 9-18 cm tall, glabrous; leaves opposite, sessile, linear to linear-lanceolate, 27-35 mm long, ciliate at base; flowers solitary in upper leaf axils; peduncl...
Annual, glabrous throughout; stems and leaves glaucous (bluish); stems 3-6 dm tall, simple below, branched from about 1 dm upward; leaves somewhat fleshy, greenish and minutely punctate above, slate-colored and nonpunctate below; lower stem leaves se...
Perennial herb; stems to 30 cm high, densely hairy, usually with 12-16 small bract-like leaves below the flower cluster; basal leaves oblong, mostly 7-11 cm long, 25-30 mm wide, rounded at the tip, with rounded teeth on the margins; petioles about 5-...
Caespitose or pulvinate, taprooted perennial, 2-10 cm tall; stems intricately branched; leaves narrowly oblanceolate, 8-20 mm long, 1-3 mm wide, strigose-canescent to canescent basally, moderately succulent; heads terminal; peduncles 3-8 mm long, den...
Perennial erect or decumbent herb; 14-60(-80) cm tall; leaves compound, trifoliate; leaflets 10-35 mm long, narrowly lanceolate, acuminate, margins toothed; peduncles pubescent, bractless, terminated by globose flower heads 20-30 mm long; flowers ref...
Perennial herb, 7-30 cm tall; caudex multiple-branched, borne on a cylindric to flattened taproot, usually with a dense cushion of old leaf bases present beneath the new growth; leaves primarily basal, undivided, elliptic to obovate-spatulate, narrow...
Acaulescent perennial herb from a short (ca 2.5 cm) vertical rhizome bearing stout fibrous roots; leaves all unlobed or rarely shallowly trilobate; petioles of longest leaves 3-7 cm; leaf blades cordate, triangular-cordate to deltoid with rounded-ser...