Stems solitary or few pseudoscapes 2–15 cm. Herbage glabrous and glaucous. Leaves whorled at the top of the pseudoscape; petioles dilated basally; blades 2–9 cm long, lanceolate to ovate in outline, bipinnate with crowded, lobed segments. Umbels solitary or few; peduncles 2–15 cm long; rays unequal, 5–30 mm long; involucral and involucel bracts linear, scarious, 1–3 mm long. Flowers yellow; sepals 0.5 mm long. Mericarps 5–7 mm long, elliptic, glabrous; wings ca. 0.5 mm wide, purplish; 3 or 4 oil tubes per interval (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).