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General:
Annual herb from a taproot; stems 10-60 cm tall, simple or branched above, sparsely hairy, multibranched, often stalked-glandular above.
Leaves:
Basal and lower stem leaves once or twice pinnately lobed, linear to egg-shaped, hairy, 3-10 cm long; upper stem leaves once pinnate to almost entire, generally glabrous, rarely glandular, 1-10 cm long.
Flowers:
Racemes elongate; flower stalks 6-12 mm long, at about 45 degrees to axis of inflorescence; petals yellow, erect, 2-3 mm long, exceeding sepals by about 0.5 mm; sepals 1.5-2.5 mm long.
Fruits:
Siliques, somewhat thicker towards the tips, rounded above, about as long as or shorter than the stalks, 7-12 (15) mm long; styles short, not beaklike; seeds 1-20 per chamber, partially in 2 rows, about 0.8 mm long.
Notes:
Two highly variable, and often intergrading, varieties occur in our region.
1. Siliques 4-12 mm long, usually nearly equal to or longer than the stalks....................... ssp. intermedia (Rydb.) Detl.
1. Siliques 10-20 mm long, usually shorter than the stalks.................. ssp. filipes (A. Gray) Detl.
Source: The Illustrated Flora of British Columbia
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