Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Moist forests, oak-ash woodlands, thickets, and fields at low elevations.
Flowers: April-June
Origin: Native
Conservation Status: Sensitive in Washington (WANHP)
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PNW Herbaria: Specimen records of Trillium albidum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Trillium albidum checklist entry.
E-Flora BC: Trillium albidum atlas page.
CalPhotos: Trillium albidum photos.
USDA Plants: Trillium albidum information.