E-Flora BC: Electronic Atlas of the Flora of British Columbia

General:
Perennial herb from a taproot and branching stem-base; forming mats up to 15 cm across; flowering stems erect, simple to few branched, glandular, 2-5 cm tall.

Leaves:
Basal leaves linear, 2-10 mm long, less than 1 mm wide, 1-nerved, glabrous to slightly hairy; stem leaves opposite, 2-3 pairs, linear, 2-8 mm long; stipules lacking.

Flowers:
Inflorescence of solitary or paired flowers; petals 5, white, narrowly oblong, 2-4.5 mm long; sepals 5, linear-oblong, rounded to obtuse and sometimes purplish at the tips, prominently 3-nerved, 2-4 mm long.

Fruits:
Capsules cylindric, 2.5-5 mm long, 3-valved; seeds 0.6-0.8 mm long, reddish-brown, smooth to minutely roughened.