Perennial herb; stems 2-5 dm long, glabrous except for the glandular-pubescent upper parts, openly branched; basal leaves biternately to triternately divided into 3 or 6 leaflets, leaflets lobed, glabrous, dark green above, somewhat paler beneath; pe...
Plants densely cespitose from stout rhizomes; culms 50-160 cm tall; leaf blades 6-15 mm wide, sometimes glaucous, thick, stiff, scabrous on margins and keel, basal sheaths brown or reddish, with fronts densely red-spotted or blotched, ladder-fibrillo...
Biennial; stems up to 2 m tall, sparingly branched, hairy; leaves about 40 cm long, pointed at the tip, lobed, the lobes toothed, teeth tipped with slender spines, upper surface of the leaves hairy, lower surface without hairs; the base of the stem l...
Herbaceous perennials to 1 m tall or more, stems erect. Leaves: Alternate, usually 3-5, orbiculate to broadly ovate or oblanceolate to elliptic-lanceolate, 8-21 cm long and 1.5-12 cm wide, erect to spreading, proximal or more evenly spaced ...
Low spreading shrub 2-3(5) dm tall, intricately branched; leaves grayish-green, alternate, entire, linear, tomentulose, tips mucronate; inflorescence a paniculate cyme; heads discoid, 8-11 mm long, 1.8-2.1 mm wide, phyllaries 16-22, outer ones someti...
Taprooted perennial, mat-forming, 10-70 cm in diameter; leaves mostly basal, spreading or ascending, 8-30 in rosettes at ends of caudex branches, oblanceolate to narrowly obovate or spatulate, 8-23 mm long, 2-7 mm wide, round or obtuse at the tip, mo...
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...
Stems growing in clumps, or commonly branched to form small dense clusters, the individual stems mostly 1-2 cm thick and to 10 cm tall; tubercles on mature stems with upper surface grooved; spines slender, spreading to erect in any one areole, mostly...
An herbaceous perennial forming dense tufts from woody rootstocks; leaves opposite, coriaceous, sessile, lanceolate-elliptic, entire, tapered to a conspicuous apiculate apex, 7-15 mm long, 1.5-3.5 mm wide; flowers solitary or in clusters of 2-3 in up...
Bulbs chunky, 1.6–2.9 × 2.2–4.7 cm, 0.6–1.1 times taller than long, 2(–4) years’ growth visible; scales 1–2-segmented, longest 1.2–2.2 cm; stem roots present or absent. Stems to 1.2 m, glaucous. Buds rounded in cross section. Leaves scattered, or mos...