General:
Annual or biennial herb from a taproot and branching stem-base; stems decumbent to erect, glabrous, 2-20 cm tall/long.

Leaves:
Basal leaves succulent, linear, 0.7-1.8 cm long, up to 1.5 mm wide, 1-nerved, glabrous, in rosettes; stem leaves opposite, 2-6 pairs, linear, 5-15 mm long, often with clusters of secondary leaves in their axils; stipules lacking.

Flowers:
Inflorescence of axillary, solitary flowers; petals 5, narrowly egg-shaped, white, 1.8-2.0 mm long, sometimes lacking; sepals 5, greenish, elliptic, rounded, about 2 mm long.

Fruits:
Capsules egg-shaped, 2-2.2 mm long, 5-valved; seeds about 0.4 mm long, slightly pebbled, dark brown, with a small, distinct projection.

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