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General:
Perennial herb from slender rhizomes, often mat-forming; stems nearly erect to decumbent, 15-60 cm tall, usually branching from base, nearly glabrous.
Leaves:
Basal leaves in rosettes, these disappearing after the first year; stem leaves egg-shaped or oblong-oblanceolate to oblong egg-shaped, 4-10 cm long, deeply lobed to pinnately-cut, the divisions narrow, incised or sharply toothed to entire, slender-stalked.
Flowers:
Racemes numerous, dense and short; flower stalks spreading to ascending, (3) 6-12 mm long; petals yellow, 3-5 mm long; sepals 2-3 mm long, deciduous shortly after anthesis, the outer pair not pouched at base.
Fruits:
Siliques, linear, often curved upward, 1-2 cm long, 1-2 mm wide; beaks 0.5-1 mm long; seeds reddish-brown, 0.6-0.8 mm long, finely honeycombed, not margined.
Source: The Illustrated Flora of British Columbia
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