Critically Imperiled
Plants robust annuals to about 8 dm tall; stems to 2 cm thick, pubescent and glandular throughout; stem leaves broadly lanceolate, 4-10 cm long, 1.5-5 cm wide, irregularly crenate-dentate or lobed, lower and basal leaves deeply lobed to pinnatifid; i...
Small, succulent perennial herb; taproot thickened, tuberous, often branched; stems, tufted, few-branched, procumbent; leaves alternate, crowded on stem, nearly terete, usually blunt or obtuse apically, 1.5-2.5 cm long and 1.5-2.5 mm thick, light gla...
Perennial with slender, creeping rhizomes; stems mostly 8-10 cm long, sparsely to densely glandular pubescent; leaves evergreen, 1-4 cm long, entire, linear to narrowly lanceolate or elliptic, glabrous to ciliate or sometimes pubescent like the stems...
Perennial herb with numerous branched and tangled rhizomes from a central caudex; above-ground stems solitary or in clumps, arising from upturned rhizome tips, forming short, leafy tufts 1-4 cm tall; leaves opposite and sessile, spreading to ascendin...
Perennial herb forming low, cushion-shaped clumps from an intricately branching, subterranean caudex; herbage silvery-gray, covered with a crust of flattened, stellate hairs; hairs usually with 5 main rays, each twice bifurcate into 20 tips, rays som...
Long-lived, low growing perennial with diffusely branching root crown (caudex) forming mounded clumps 1-3 dm in diameter; herbage densely covered with overlapping gear-shaped (stellate-discoid) trichomes; stems 3-10 cm long; basal leaves narrowly obl...
Perennial, more or less densely pubescent with closely appressed more or less stellate trichomes, these 0.2-0.3 mm in diameter, sessile or substipitate, smooth or finely granular, rays 4-7, distinct but stout and usually contiguous at their bases and...
Perennial herb; stems 15-40 cm tall, branching above, faintly scabrous-hairy; leaves oblong to somewhat oblong-oval in outline, blade 1.5-14 cm long, 1-9 cm wide, 2- to 3-times pinnately parted, the ultimate divisions linear, acute-mucronate at tips,...