General:
Annual herb from a slender taproot; stems 15-40 cm tall, branched throughout, glabrous.

Leaves:
Linear, 1-3.5 cm long, 0.5-2.5 mm wide, entire, gradually but not significantly reduced above.

Flowers:
Inflorescence open, panicle-like, of several to many flowers on slender stalks in leaf axils, opening at dawn; sepals and petals about 0.5 mm long, the petals white to pinkish; largest stamens about 0.5 mm long; ovaries glabrous or minutely-hairy.

Fruits:
Capsules, 3-6 mm long, distinctly constricted between seeds; stalks threadlike, 3-6 mm long, often exceeding the capsules, spreading to erect in flower, but often sharply reflexed in fruit; seeds 10-30, in 2 rows in a chamber and overlapping, about 0.5 mm long, glabrous.

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