General:
Perennial herb from a strong taproot; stems erect, solitary to several, simple (below the inflorescence), 60-200 cm tall, smooth.

Leaves:
Basal leaves widely to narrowly oblong or egg-shaped, more or less rounded at the base, the margins slightly wavy, the blades 15-30 cm long, the stalks long; stem leaves alternate, several, similar to basal leaves but reduced upward.

Flowers:
Inflorescence of numerous flowers in a slender panicle; flower stalks jointed below midlength; outer perianth segments 1.5-2 mm long, ultimately reflexed, inner perianth segments mostly 5-9 mm long, broadly heart-shaped, net-veined, usually 1 segment with a small, grain-like swelling.

Fruits:
Achenes, brown, smooth, 3-3.5 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