Distribution: Occurring west of the Cascades crest in the Puget Sound lowlands and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Prairies, rocky balds, moist woods; at low elevations.
Growth Duration: Perennial
Conservation Status: Not of concern
Perennial herb from a deep corm; flowering stems to 30 cm tall.
All basal, usually paired; lanceolate; strongly mottled with brown.
Showy white blooms with 6 tepals to 5 cm long; 1-3 at stem tips.
Erect capsules 3-5 cm long.
The mottled leaves and low-elevation habitat separate this species from E. montanum, which also has white flowers; our other Erythronium species have pink or yellow flowers.
PNW Herbaria: Specimen records of Erythronium oregonum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Erythronium oregonum checklist entry.
OregonFlora: Erythronium oregonum information.
E-Flora BC: Erythronium oregonum atlas page.
CalPhotos: Erythronium oregonum photos.
USDA Plants: Erythronium oregonum information.