Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington, but also in the southeastern part of state; British Columbia to California, east to Arizona.
Habitat: Open meadows, grasslands, prairies, and sandy riverbanks at low to moderate elevations.
Flowers: April-July
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bumblebees, bees, flies, butterflies, wasps
[none provided]
Publication: Bot. Reg. 13: t. 1109. 1827.
Lupinus hirsutulus Greene
Lupinus micranthus Douglas, homonym (illegitimate) [HC]
Lupinus micranthus Douglas var. bicolor (Lindl.) S. Watson
Lupinus polycarpus Greene [KZ99]
Lupinus strigulosus Gand.
PNW Herbaria: Specimen records of Lupinus bicolor in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Lupinus bicolor checklist entry.
OregonFlora: Lupinus bicolor information.
E-Flora BC: Lupinus bicolor atlas page.
CalPhotos: Lupinus bicolor photos.
USDA Plants: Lupinus bicolor information.
