Glabrous and glaucous perennial with a woody, branched caudex. Stems erect to ascending, 5–50 cm. Leaves simple, linear to lance-linear, entire, 2–12 cm long. Umbels compound, terminal and axillary; rays 1–5 cm long; involucral bracts lanceolate, 5–15 mm long; involucel of ovate bracts 2–5 mm long, united below; umbellets compact. Flowers yellow; stylopodium hemispheric; petals <1 mm long. Mericarps narrowly elliptic, 2–3 mm long, glabrous, glaucous; ribs raised but not winged; oil tubes many in the intervals (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).