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

Perideridia gairdneri (Hook. & Arn.) Mathias
Gairdner's yampah
Apiaceae

Introduction to Vascular Plants

Photograph

Map

Distribution of Perideridia gairdneri
Click here to view the full interactive map and legend

Species Information

General:
Slender perennial herb from tuberous-thickened and often clustered edible root, often fascicled, glabrous; stems solitary, 0.4-1.2 m tall.

Leaves:
Several, well distributed along stem, divided 1-3 times, elongate; basal leaf sheaths not much inflated; ultimate segments long and narrow.

Flowers:
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.

Fruits:
Roundish, 2-3 mm long and wide, slightly flattened, glabrous, prominent ribs.

Source: The Illustrated Flora of British Columbia

Illustration

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

USDA Species Characteristics

Flower Colour:
White

Blooming Period:
Mid Spring

Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer

Source: The USDA

Habitat and Range

Moist to dry meadows and woodlands in the lowland and montane zones; infrequent in SE and SW BC (known from SE Vancouver Island and the Gulf Islands), also rare in SC BC; E to SK and S to SD, CO, NM and CA.

Source: The Illustrated Flora of British Columbia