General:
Perennial herb; stems erect or ascending, solitary, simple or branched below, slightly if at all dotted with reddish or blackish spots, densely glandular-hairy, 60-150 cm tall.

Leaves:
Basal leaves lacking; stem leaves opposite or in whorls of 3 or 4, lanceolate to narrowly elliptic, dotted with reddish or blackish spots, 3-10 cm long.

Flowers:
Inflorescence branching, with younger flowers borne at the tips, leafy-bracted; corollas uniformly yellow, without streaks or dots, 8-11 (13) mm wide, 5-lobed, the lobes entire; calyces 5-lobed, the lobes at most about 5 mm long, dark-margined; styles deciduous; filaments fused at the bases; sterile stamens lacking.

Fruits:
Capsules, breaking into valves at dispersal; seeds few.

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