Distribution: Occurring in scattered localities on both sides of the Cascades in Washington; British Columbia to Oregon, east to Montana; widely distributed in eastern North America.
Habitat: Uncommon garden escape of moist areas, lake and pond margins, and riparian zones.
Origin: Introduced from Europe
Conservation Status: Not of concern
Erect, downy-pubescent herbs, the flowering stems 3-10 dm. tall.
Leaves in whorls of 2-4, short-petiolate, broadly lanceolate, often black-dotted.
Flowers in axillary racemes, on long pedicels; calyx divided nearly to the base, the 5 lobes red-margined; corolla yellow, rotate, 15-20 mm. across; stamens 5, exerted, opposite the corolla lobes.
Capsule opening by valves.