General:
Fibrous-rooted biennial or perennial herb from a taproot; stems branching, glabrous, 30-100 cm tall.

Leaves:
Spiny-toothed, blades of the basal leaves equal to or longer than the stalks, rounded to heart-shaped at the base.

Flowers:
Inflorescence of terminal, densely capitate umbellets without spokes, stalked; flowers white to blue.

Fruits:
Sphere-like to egg-shaped, flattened lengthwise, covered with scales or tubercles, sessile; without ribs. vol1_2

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