Plants caulescent from a linear-thickened taproot. Stems ascending to erect, 2-15 cm. Herbage minutely scabrous. Leaf blades ovate in outline, ca. triternate or tripinnate; ultimate segments crowded, linear 1-3 x 0.2-0.5 mm. Umbels: peduncle 7-20 cm; rays unequal, 2-8 cm long; umbellets congested; involucel bracts absent or solitary, linear, 1-2 mm long. Flowers yellow. Mericarps glabrous, lance-elliptic, 7-12 mm long; marginal wings ca 0.5 mm wide; oil tubes inconspicuous. (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Shallow soil of rock outcrops in meadows, open forest; montane, lower subalpine (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).