Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Montana, Wyoming and Colorado.
Habitat: Common in wet meadows and along rivers and streams from middle to high elevations in the mountains, occasionally found along low elevation rivers.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees
Perennial from stout, branching rhizomes, the stout stems clustered, 3-10 dm. tall; herbage viscid-villous.
Leaves opposite, sessile, with several prominent veins from the base, irregularly dentate to entire, the lower ones reduced; leaves lanceolate to ovate or elliptic, acute, 3-7 cm. long and 1-3.5 cm. wide.
Flowers solitary in the leaf axils on pedicels 3-6 cm. long; calyx 1.5-2.5 cm. long, the 5 teeth sharp-pointed and equal; corolla showy, purplish-pink, marked with yellow, 3.5-5 cm. long, strongly bilabiate; stamens 4.
Capsule.
PNW Herbaria: Specimen records of Erythranthe lewisii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Erythranthe lewisii checklist entry
OregonFlora: Erythranthe lewisii information
E-Flora BC: Erythranthe lewisii atlas page
CalPhotos: Erythranthe lewisii photos