Distribution: East of the Cascades in Washington; Washington south to the Sierra Nevada of California, east to Idaho.
Habitat: Meadows and prairies at low to moderate elevations.
Conservation Status: Sensitive in Washington (WANHP)
Slender, glabrous and glaucous annuals, the stems 0.5-4 dm. tall, simple or somewhat branched.
Leaves mostly opposite, 0.5-3 cm. long, sessile, entire, 1-nerved, but the reduced upper floral bracts serrulate-glandular.
Flowers in terminal, few-flowered racemes; sepals 5, 2-3 mm. long, very unequal, the outer ones serrate, all glandular; petals 5, pale yellow, from as long to twice as long as the shorter sepals; stamens 5, united at the base; styles 2, the stigmas elongate; ovary superior.
Capsule 2-celled, about equal to the calyx.