General:
Annual herb from a taproot; stems ascending to spreading, freely branched, with stalked glands at least on the upper part, to 15 cm tall.

Leaves:
Alternate, linear, 1-5 cm long, 1-5 mm wide, entire.

Flowers:
Single or in pairs along and at the ends of the branches (stems branched so that the nearly stalkless flowers appear to be borne in the forks of the branches and in the axils of the leaves); corollas pinkish to white, 4-6 mm long, the short tube spreading to five lobes; calyces 1/2-2/3 as long as the corollas, bowed out and often forming purplish knobs at the sinuses, the triangular teeth 1-2 mm long.

Fruits:
Capsules, with 1-seeded chambers; seeds becoming sticky when moistened.

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