General:
Annual herb from a taproot; stems erect, 0.4-1.2 m tall, freely branched, sparsely to densely hairy with spreading hairs or the hairs pointing backward, glabrous above.

Leaves:
Broadly deltoid-lanceolate to lanceolate, to 15 cm long, short-stalked, pinnately-cut, the segments pointing backwards, usually with large, long-pointed, terminal lobes irregularly saw-toothed to toothed.

Flowers:
Racemes to 40 cm long in fruit; petals lemon yellow, 6-8 mm long, broadly egg-shaped with long narrow claw; sepals about 3.5 mm long, lanceolate.

Fruits:
Siliques, ascending to erect but not appressed, straight or slightly arcuate, 2-3.5 cm long, round in cross section, segments prominently 3-nerved; beaks about 0.5 mm long; fruiting stalks spreading to ascending, 7-20 mm long, slender; seeds uniseriate, about 0.7 mm long, not gelatinous when wet.

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