Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to northwest Oregon, east to Montana.
Habitat: Moist, shady woods.
Flowers: August-September
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Succulent, freely-branched annual, the stems 4-10 dm. tall.
Leaves all alternate, the petioles very slender, 1-3 cm. long; leaf blades ovate-elliptic to elliptic-lancelolate, 3-10 cm. long, coarsely serrate, the teeth 3-7 on each margin.
Flowers mostly paired in open, leafy, axillary racemes, pale yellow to orange, 1-2 cm. long; sepals 3, one saccate but not spurred, the other two much smaller; petals 5, the upper one notched at the tip, the lateral ones much smaller, in unequal pairs.
Capsule 5-celled.
PNW Herbaria: Specimen records of Impatiens ecornuta in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Impatiens ecornuta checklist entry
OregonFlora: Impatiens ecornuta information
E-Flora BC: Impatiens ecornuta atlas page
CalPhotos: Impatiens ecornuta photos