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

General:
Biennial or annual herb from a taproot, also some fibrous roots from the lower nodes; stems erect to ascending, one or more, freely branched, 10-40 cm tall, usually stiff-hairy at the base.

Leaves:
Basal and stem leaves pinnate, generally glabrous, lateral lobes (2) 4-10, shortly-stalked to stalked; basal leaves not rosetted, oblanceolate to egg-shaped, entire or shallowly lobed, 3-15 cm long, the terminal leaflet usually largest, up to 2 cm long; stem leaves linear or lanceolate to linear-oblanceolate.

Flowers:
Inflorescence an elongated racemes, more or less umbel-like, 3-10 cm long, usually lacking bracts; flower stalks ascending, 5-10 mm long; petals white, 2-4 mm long; sepals 1.2-1.8 mm long.

Fruits:
Siliques, erect, 1.5-2.5 cm long, 0.7-1 (1.5) mm wide, glabrous; styles 0.4-0.8 mm long; seeds (20) 24-40, about 1 mm long, usually wingless.