Plants subacaulescent from a thickened taproot. Herbage pubescent. Leaf blades ovate in outline, bipinnate, divided into lanceolate, deeply pinnately lobed leaflets; ultimate segments 2–5 × up to 2 mm. Umbel: peduncles ascending, 5–25 cm; rays ca. equal, 1–5 cm long; involucel bracts linear, 3–13 mm long, united on 1 side of the compact umbellet. Flowers white (pink). Mericarps lance-elliptic, 10–15 mm long, glabrous; marginal wings 1–2 mm wide; oil tubes solitary in each interval (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Grasslands or shallow soil of outcrops, open slopes; plains, valleys, montane (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).