Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
Habitat: Disturbed, open areas in sagebrush desert, roadsides, fields, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Conservation Status: Not of concern
Somewhat glandular-pubescent annual, the 1-several stems simple or basally branched, 5-20 cm. tall.
Leaves mainly in a basal rosette, lanceolate to oblong, 10-20 mm. long; cauline leaves 2-3 remote pairs, ovate-lanceolate, 10-35 mm. long, sessile.
Flowers 4-16 in a terminal umbel, the pedicels slender, 2-3 cm. long; sepals 5, distinct, about 3 mm. long; petals 5, white, equaling the calyx, the tips erose; stamens 5; styles 3.
Capsule ovoid-cylindric, twice as long as the calyx, opening by 6 valves.