Distribution: Northeast Oregon and adjacent Idaho, south through eastern Oregon and western Idaho to Nevada and Utah.
Habitat: Dry, open, often rocky hillsides, ridges and dry washes in the foothills and high plains.
Flowers: July - August
Conservation Status: Not of concern
Slender, glabrous perennial from a tuberous-thickened, edible, fascicled root, the stem solitary, 2-6 dm. tall.
Lower leaves well-developed and crowded, the petiole dilated, 2-8 cm. long, the blade 5-25 cm. long, ternate-pinnately dissected, with narrow, numerous ultimate segments, these distinctly dimorphic; upper leaves few and reduced, the petiole well-deeloped but the blade often reduced to a single, narrow segment.
Umbles 1-several, long-pedunculate, 1.5-5 cm. wide, the rays up to 3.5 cm. long; bractlets of the involucel well-developed, scarious, narrowly lanceolate to obovate, acuminate; calyx teeth well developed; flowers white.
Fruit oblong, 3-5 mm. long.