General:
Perennial herb from a stout taproot; stems erect, solitary, unbranched (below the inflorescence), 50-100 cm tall, smooth.

Leaves:
Basal leaves oblong-lanceolate, wedge-shaped to rounded at the base, strongly crisp-margined, the blades 10-30 cm long, the stalks long, pimply and finely hairy; stem leaves alternate, reduced upward, becoming short-stalked.

Flowers:
Inflorescence of numerous flowers in a large, dense, usually greenish, elongate panicle; flower stalks jointed below midlength; outer perianth segments about 1.5 mm long, inner perianth segments mostly 4-6 mm long, each usually with an elliptic-oblong, net-veined, grain-like swelling.

Fruits:
Achenes brown, smooth, shiny, about 2.5 mm long.

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