Perennial herb arising from slender woody rhizomes; stems erect, to 3.5 dm tall; basal leaves obovate to oblanceolate 1.8-13.5 cm long, 6-27 mm wide, serrate with small shallow teeth, tapering at the base to a winged petiole; stem leaves similar, bec...
Tufted perennial herb forming mats up to 5 dm across; leaves broadly elliptic, 3-5 cm long, 1.5-3.0 cm wide, margins entire, green above, white tomentose below; inflorescences branched 3-5 times, 2-5 dm tall; bracts leaflike, those of the first node ...
Stems solitary, growing in clumps, or commonly branched to form small dense clusters, the individual stems mostly 2-4 cm thick and to 15 cm long; tubercles on mature stems with upper surface bearing a groove; spines about 20-50 per areole, majority s...
Perennial herbs; stems (15)20-30(40) cm tall, few to numerous, ascending or very shortly decumbent, woody below, herbaceous above, branching frequently in lower half, villous below, sparsely to densely puberulent above with tightly retrorse hairs; le...
Rhizomatous, perennial herb, the rhizomes slender and unbranched; stems several, unbranched, clustered, somewhat woody at the base, 10-20 cm tall; leaves opposite, 8-15 mm long, 2.5-5.0 mm wide, sessile, oblong-lanceolate, tip rounded to acute, margi...
Perennial herb, with thick rhizomes; leaves basal, green (not variegated) glandular-puberulent along margins & abaxial veins, mostly glabrous adaxially, broadly ovate to orbicular, cordate at base, shallowly palmately lobed, lobes rounded, petioles ...
Stems pinkish-red, pinkish-yellow, or pinkish white; flowers with sepals pale creamy yellow or dull pale pinkish-purple with pinkish-red, pinkish-brown or pinkish-purple veins, connivent or spreading apically; dorsal sepal lanceolate to oblong, 15-18...
Plant saprophytic; stems reddish-purple, leafless except for a few widely spaced bracts, glabrous, up to 30 cm tall; inflorescence loosely to densely flowered, with up to 20 small, shiny flowers; sepals and petals pinkish-brown, parallel veins darker...
Perennial herb from a woody base; stems single to many, 15-40 cm tall; leaves usually alternate, 1.7-3.8 cm long, 1.0-2.5 cm wide, mostly deeply and narrowly three-lobed, somewhat cruciform; flower heads terminal, solitary or in small clusters, somew...
Broomlike shrub up to 1.5 m tall; stems many-branched, covered with silvery, matted, feltlike hairs out of which protrude numerous small oil blisters; leaves needlelike, alternate, 5-12 mm long; heads 3-4, terminal on stems; flowers 3, rarely 4, per ...