Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other disturbed areas, often where moist.
Origin: Introduced from Eurasia
Conservation Status: Not of concern
Annual herb (sometimes overwintering in mild areas) with weak trailing stems 5-30 cm tall.
Opposite, broadly elliptic, petiolate, 10-25 mm long.
White, petals 5, deeply notched, to 5 mm long; in small leafy clusters at ends of stems.
Capsules 6-7 mm long.
Look for a distinct line of hairs running along each stem, and 5 small white deeply notched petals.