General:
Stout perennial herb from a taproot or cluster of tuberous roots; stems single, not thickened at the base, erect, 0.3 to 1 m tall.

Leaves:
Basal leaves absent; stem leaves compound, divided 1-3 times; the middle and lower leaves dissected, narrowly linear; the upper leaves reduced with fewer segments, many bearing axillary bulbils; leaflets 3-5 cm long.

Flowers:
Inflorescence terminal in a compound umbel, white to greenish; calyx saw-toothed.

Fruits:
Rounded, 1.5-2 mm long, constricted where the carpels join, ribs broad.

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