E-Flora BC: Electronic Atlas of the Flora of British Columbia

General:
Stout, glabrous perennial herb from a globose thickened or necklace-like to elongate and slender taproot; stems 10-80 cm tall, erect, sometimes branching.

Leaves:
All basal, compoundly dissected, glabrous; ultimate segments of the leaves narrow and scarcely leaflike, less than 5 mm wide.

Flowers:
Inflorescence of compound umbels; flowers usually yellow or sometimes white, sometimes purple; involucels generally wanting.

Fruits:
Linear to narrowly oblong, mostly 3-8 times as long as wide (less than 4 mm wide), wings evident but narrow, less than 1/3 as wide as the body or obsolete.