Distribution: East of the Cascades crest in Washington; Alaska south to the Wenatchee Mountains of Washington, east to the Rocky Mountains and northern Great Plains.
Habitat: Prairies to mountain slopes, mostly on well-drained soil.
Conservation Status: Not of concern
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.