Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska east to California, east to the Rocky Mountains, Great Lakes region, and the Atlantic coast;.

Habitat: Wet soil, often in bogs.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, flies

Herbaceous perennial from slender rhizomes, the stems 1-4 dm. tall, gray from fine, appressed hairs.

Leaves mostly opposite, sessile, entire to denticulate, obtuse, linear to lanceolate, 2-6 cm. long and 4-6 mm. broad.

Inflorescence loosely racemose to paniculate; pedicels slender, 1-4 cm. long; calyx tube 1-1.5 mm. long, the 4 lobes twice as long; petals 4, 3-5 mm. long, notched, white to pinkish; stamens 8; styled shorter than the petals; stigma 1 mm. long, shallowly 4-lobed; ovary inferior, 4-celled.

Capsule 3-6 cm. long, linear, grayish; seeds with a tuft of white to tawny hairs at the tip.