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General:
Annual herb from a taproot; stems decumbent to erect, spreading-hairy, reddish with swollen nodes, 3-40 cm tall.
Leaves:
Basal leaves pinnately divided with narrow incised segments, oblong in outline, stiff-hairy, 3-10 cm long; stem leaves similar, few, opposite, reduced upwards; stipules abruptly pointed.
Flowers:
Inflorescence of few, small, axillary, umbrella-shaped clusters of flowers; petals pink to purple, sometimes whitish, 3-8 mm long, the claw fringed with long hairs; sepals slightly shorter than the petals, bristle-tipped to awned with a fringed claw.
Fruits:
Carpels, spindle-shaped, sharp-pointed at the base; styles long-beaked, 3-4 cm long, twisting at maturity; seeds 1 per segment, glabrous.
Source: The Illustrated Flora of British Columbia
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