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.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Peucedanum ambiguum (Nutt.) Nutt. ex Torr. & A. Gray