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

General:
Annual or biennial herb from taproot; stems 20-100 cm tall, usually branched, at least above, nearly glabrous and greenish or the hairs whitish-starlike, often stalked-glandular above.

Leaves:
Basal and lower stem leaves once or twice pinnately lobed or 1-2 compound, widely lanceolate or oblanceolate to egg-shaped, 1.5-10 cm long; upper stem leaves simple to 1-pinnate, entire.

Flowers:
Racemes densely flowered; flower stalks slender, spreading to strongly ascending, 4-8 mm long; petals pale to deep yellow, 1.5-3.5 mm long; sepals 1-2.5 mm long.

Fruits:
Siliques, straight or somewhat curved, 5-17 mm long, 1-1.5 mm wide, usually longer than the stalks, strongly constricted between the seeds, tapered and sharp-pointed at each end but more at tip; styles 0.1-0.7 mm long; seeds in one row, usually 4-10 per chamber.

Notes:
Three subspecies may be recognized in BC.

1. Stalks and siliques erect and closely appressed to the axis of the inflorescence; plants with greyish, starlike hairs, infrequent in SE BC, rare northwards....................... ssp. incana

1. Stalks and siliques ascending to spreading; plants with or without glands, infrequent in SW and SC BC.

2. Plants with stalked glands, infrequent in SW and SC BC....................... ssp. viscosa (Rydb.) Kartesz & Gandhi

2. Plants without glands, infrequent in SC BC.................... ssp. incisa (Engelm.) Kartesz & Gandhi