Distribution: Occurring east of the Cascades crest in southeastern Washington; British Columbia to Oregon, east to Idaho and Montana; also in central and eastern North America.

Habitat: Stream banks, woods, marshes and wet meadows.

Flowers: June-October

Origin: Introduced from Europe

Growth Duration: Perennial

Conservation Status: Not of concern

Straggling, herbaceous perennial, the stems decumbent to ascending, simple or branched, up to 6 dm. tall, pubescent above.

Leaves opposite, ovate, the tip acute, the lower leaves petiolate, gradually reduced upward, becoming sessile above

Flowers solitary in the leaf axils, long petiolate; sepals 5, green, linear-oblanceolate; petals 5, white, deeply notched, about 7 mm. long, much longer than the sepals; stamens 10; styles 5.

Capsule globose-ovoid, opening by 5 valves.

Capsule