General:
Annual or biennial herb from a branched taproot; stems erect, branched above, smooth, 30-100 cm tall.

Leaves:
Basal leaves reduced; stem leaves alternate, 6-10 cm long, uniformly pinnatifid from the base of the blade with 8-22, paired, linear-elliptic segments, margins minutely toothed and papery, smooth.

Flowers:
Inflorescence a terminal, spike-like raceme of numerous short-stalked flowers; petals 5-6, whitish to greenish-white, 4-6 mm long, shallowly to deeply 3-lobed, the central lobe narrower than the outer ones; sepals 5-6, 1/2 the length of the corolla; stamens 11-13.

Fruits:
Capsules, oblong, 10-13 mm long; seeds kidney-shaped, 1.2-1.4 mm long, finely pimpled, dull.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia