Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also scattered in eastern North America.

Habitat: Moist, disturbed areas.

Flowers: July-October

Origin: Introduced from Europe

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, butterflies

Strongly aromatic, perennial herbs from creeping rhizomes, the square stems prostrate to ascending, pubescent, 2-6 dm. tall.

Leaves opposite, all cauline, petiolate, densely soft-pubescent, oval, nearly entire, small, with only 2-3 lateral veins.

Flowers in compact verticels in the axils of the deflexed upper leaves, which barely surpass the flower clusters, the verticels well separated; calyx pubescent, 2.5-3 mm. long, regular, 5-lobed, the 2 lower lobes narrower, 10-nerved; corolla nearly regular, four-lobed, with a short tube, lilac, 4-7 mm. long; stamens 4, equal, exerted; style 2-parted; ovary 2-celled, superior.

Nutlets 4