General:
Perennial herb from a woody root and a branched stem-base; densely tufted, forming thick cushions to 40 cm wide; stems erect, solitary, simple, glabrous, 3-6 (rarely 15) cm tall.

Leaves:
Basal and stem leaves opposite, linear to lance-linear, unstalked, 5-15 mm long, to 1.5 mm wide, glabrous to fringed at the base or stiffly short-hairy, channelled above, so dense as to obscure the stem; stipules lacking.

Flowers:
Inflorescence of solitary flowers, usually unisexual (the plants either male or female); petals 5, pink to lavender (occasionally white), egg-shaped, 2-cleft, 8-12 mm long, with narrow stalklike bases about twice as long as the blades; sepals 5, green or frequently pinkish to purplish-tinged, united, forming a tube 4-9 mm long, 10-nerved, glabrous.

Fruits:
Capsules subcylindric, 4-10 mm long, 6-valved; seeds light brown to yellowish, kidney-shaped, 0.8-1.2 mm long, weakly pimply.

Notes:
Two varieties occur in BC:

1. Calyces 4-7 mm tall.................... var. acaulis

1. Calyces 6-11 mm tall..................... var. subacaulescens (F.N. Williams) Fern. & St. John

Source:  The Illustrated Flora of British Columbia