Distribution: Occurring east of the Cascades crest in the Wenatchee Mountains in Washington, where disjunct from the main species range Alaska, south in the Rocky Mountains to New Mexico, east to the northern Great Plains and the Great Lakes region, disjunct in the Wenatchee Mountains in Washington.
Habitat: Prairies to mountain slopes, mostly on well-drained soil.
Conservation Status: Threatened in Washington (WANHP)
Grayish, hairy perennial from a branched, woody base, the 1-many stems 5-25 cm. tall.
Basal leaves numerous, long-petiolate, the blades 4-10 cm. broad, primarily ternate but divided into numerous linear divisions 1-2 mm. broad; the flowering stem naked except for a whorl of 3 leaves near the midpoint, divided much like the basal leaves, but smaller and sessile.
Flowers single; sepals 5-7, blue to purple, oblong-elliptic to oblong-lanceolate, 2.5-3.5 cm long; petals none; stamens and pistils numerous.
Achenes numerous, silky, linear-ellipsoid, 3 mm. long; style slender, flexuous, short-plumose, 2-3.5 mm. long.