Distribution: Occurring in a few scattered locations west of the Cascades in Washington; British Columbia south to Oregon; scattered areas of central and eastern North America.
Habitat: Woodlands at low elevations.
Origin: Introduced from Europe
Conservation Status: Not of concern
Vanilla-scented, rhizomatous perennial, the stems 1.5-5 dm. tall, glabrous except for retrorse, sharp hairs at the nodes.
Leaves mostly in whorles of 8, occasionally 6 or 10, sessile, oblanceolate to narrowly elliptic, tipped with a sharp point, 1.5-5 cm. long and 4-12 mm. wide, with scabrous hairs on the margins.
Inflorescence a terminal, naked cyme; calyx obsolete; corolla white, 3-5 mm. long, the 4 lobes flaring, about equal in length to the tube; stamens alternating with the corolla lobes, attached to the corolla; ovary 2-celled, inferior.
Fruit dry, about 3 mm. long, covered with hooked bristles.