Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Open, moist areas, often where dry by late spring, from lowlands to mid-elevations in the mountains.
Flowers: April-June
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, butterflies, beetles, wasps
Scapose perennial from a deep-seated bulb, the scape 2-7 dm. tall.
Leaves several, all basal, 8-20 mm. broad, considerably shorter than the scape.
Inflorescence a raceme, many-flowered, 5-30 cm. long; pedicels 10-20 mm. long, spreading, arched or ascending in flower, incurved-erect in fruit; flowers pale to deep blue or violet, somewhat irregular; tepals 6, distinct, 15-35 mm. long and 2-8 mm. broad, narrowed at base, lowest segment curved outward and downward away from the others, all withering separately and exposing the ovary; stamens 6, anthers yellow or blue, style slender, stigmas 3.
Capsule ovoid, 3-celled, 1-2.5 cm. long.
Endemic to the lowlands west of the Cascades crest in Washington, including the Puget Trough from Pierce County, Washington, to Grays Harbor County, and on both sides of the Olympic Mountains.
Occurring in the south-central and southeastern counties in Washington; southern Washington to California, east to Nevada.
Occurring west of the Cascades crest in Washington; British Columbia to the Willamette Valley, Oregon; more common in the northern part of range
Occurring east of the Cascades crest in Washington; southern British Columbia to eastern Oregon, east to MontanaPNW Herbaria: Specimen records of Camassia quamash in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Camassia quamash checklist entry
OregonFlora: Camassia quamash information
E-Flora BC: Camassia quamash atlas page
CalPhotos: Camassia quamash photos