Slender perennial herb from tuberous-thickened and often clustered edible root, often fascicled, glabrous; stems solitary, 0.4-1.2 m tall.
Several, well distributed along stem, divided 1-3 times, elongate; basal leaf sheaths not much inflated; ultimate segments long and narrow.
Inflorescence of compound umbels; flowers terminal and lateral; spokes up to 6 cm long at maturity; flowers white or pink; involucel bractlets bristly or obsolete.
Roundish, 2-3 mm long and wide, slightly flattened, glabrous, prominent ribs.
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
Present from Spring to Summer
Source: The USDA