Description. Perennial species with one to several flower scapes rising 10-30 cm high from a cluster of basal leaves and from an elongate taproot and usually simple, subterranean crown. The foliage is glaucous. The leaves are pinnately or ternate-pinnately once to twice compound – the ultimate segments being leaf-like, toothed or cleft. The flowers are white, yellow or ochroleucous. The inflorescence is an umbel composed of 4 to 16 rays of 2-7 cm of length. The pedicels are 2-15 mm long. The fruits are dark purplish in color, oblong to broadly elliptic, 6-16 mm long with the wings equaling or narrower than the body and with prominent dorsal and intermediate ribs.