Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to the Willamette Valley in Oregon, also known historically from Vancouver Island.
Habitat: Moist to dry areas of prairies and openings in oak woodlands.
Flowers: April-June
Origin: Native
Growth Duration: Perennial
Conservation Status: Endangered in Washington (WANHP)
Pollination: Bumblebees, bees, flies, butterflies, beetles, wasps
[none provided]
PNW Herbaria: Specimen records of Lupinus oreganus in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Lupinus oreganus checklist entry
OregonFlora: Lupinus oreganus information
E-Flora BC: Lupinus oreganus atlas page
CalPhotos: Lupinus oreganus photos