Herbaceous perennial from a woody caudex; stems sparsely pubescent, 30-50 cm long; leaves glabrous, the lower elliptic to lanceolate, 6-10 mm wide, the upper linear, 1 mm broad; calyx lobes awl-shaped, glabrous or sparsely ciliate, 5-6 mm long; corol...
Robust biennial or monocarpic perennial; stem strict, 1-2.5 m tall; basal leaves ample, succulent, 30 cm or more long, sinuate or pinnatifid, weakly prickly with short black spines, nearly glabrous, the thin weblike wool tardily deciduous; stem leave...
Strong perennial from a stout taproot; stems prostrate to spreading, 20-70 cm long; leaves pinnately compound, 1-2.5 cm long, bright green, leaflets 5-9, thick, broadest near tip, 3-8 mm long; flowers in spikes, zygomorphic, pea-like, petals 5, pale ...
Winter annuals or biennials (perennial?); taproots enlarged above; stems 1 to several, usually with several branches 1.5-3.5 dm long, pubescent at base with simple trichomes, glabrous above ;leaves mostly in flat basal rosettes, denticulate to dentat...
Tufted perennial; caudex simple or closely branched, thick with marcescent (withered but persistent) leaf bases; stems few, 1-3 dm long, very slender, erect to partially decumbent, simple or few-branched, sparsely pubescent below with simple or forke...
Perennial, mat-forming herb with fibrous root system and slender rhizomes up to 15 cm long; leaves clustered at tips of rhizomes, 5-12 mm long, 1.0-3.5 mm wide, spatulate or obovate, broadest above the middle, tapering toward the petiole, margins en...
Annual, 1-2 m tall, branched above, stem glabrous to hispid; leaves opposite below, alternate above, up to 17.5 cm long by 8.5 cm wide, lanceolate with 3 prominent veins, base tapering to a short petiole, margins entire except for a few prominent tee...
Biennial herb; stem solitary, branching above the middle, 3-6 dm tall, glabrous or sparsely pubescent in the inflorescence; basal rosette leaves dying when the plant flowers; stem leaves numerous, pinnatifid with narrowly linear lobes; inflorescence ...
Perennial herb; stems several from the base, white, stout, leafy, 2.2-8 dm tall, sparsely covered with minute, reflexed or spreading barbed hairs; basal leaves not persistent; stem leaves entire or with a few short laciniate lobes, linear to narrowly...