Distribution: Southeast Washington and northeast Oregon east to Beaverhead County, Montana, south to Nevada, Utah, and northeast California.
Habitat: Gravelly sagebrush-covered hills at 6000 feet elevation to rocky alpine slopes.
Conservation Status: Not of concern
Tufted perennial from a freely-branched, woody base, forming mats 5-15 cm. broad; flowering stems numerous, 10-20 cm. tall, glandular-pubescent with dark-tipped hairs.
Leaves mostly basal, forming thick, prickly cushions, rigid and sharp-pointed, spreading, narrowly linear, 1-2 cm. long and less than 0.5 mm. wide; cauline leaves few, 1-2 pairs, greatly reduced.
Flowers several to numerous, in open, diffuse cymes; sepals 5, broadly ovate, 3-4 mm. long, obtuse, wing-margined and purplish-tinged; petals 5, white, nearly twice as long as the sepals; stamens 10; styles 3.
Capsule ovoid, about the length of the calyx, dehiscent by 6 teeth.