Distribution: Occurring on both sides of the Cascades crest in Washington, but only occurring in the far western and eastern counties; British Columbia to California, east to the Rocky Mountains.
Habitat: Sandy, well-drained soil to wet meadowland, low to moderate elevations.
Flowers: May-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees
Herbaceous perennial from thick, woody rhizomes, the stem 5-10 dm. tall, more or less hollow, densely pubescent, or glabrous below.
Leaves trifoliate, leaflets linear-elliptic to oblanceolate, up to 10 cm. long; stipules linear-lanceolate, leaf-like.
Inflorescence of sub-terminal, bracteate, axillary racemes, erect, 10- to 60-flowered, 1-3 dm. long; flowers pea-like, yellow, erect, 20-25 mm. long; calyx bell-shaped, bilabiate, the lips toothed; stamens 10, distinct.
Pods erect to spreading, straight, villous, leathery.
Publication: Fl. N. Amer. (Torr. & A. Gray) 1(3): 388. 1840.
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var. ovata – slender goldenbanner
Occurring on both sides of the Cascades crest in Washington, but only occurring in the far western and eastern counties; southwestern Washington to the Willamette Valley, also from southeastern Washington to western Montana.
PNW Herbaria: Specimen records of Thermopsis montana in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Thermopsis montana checklist entry
OregonFlora: Thermopsis montana information
E-Flora BC: Thermopsis montana atlas page
CalPhotos: Thermopsis montana photos
