Lewisia
bitterroot, lewisia
6 species
4 subspecies and varieties
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Lewisia columbianaColumbia lewisia
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Montana.
Habitat: Open gravelly or rocky slopes and rock crevices at mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
var. columbiana – Columbia lewisia
var. rupicola – Columbia lewisia
Lewisia cotyledonSiskiyou lewisia
Origin: Introduced
Lewisia nevadensisNevada bitterroot
Distribution: Olympic and Cascade Mountains of Washington, south to California.
Habitat: Open, often gravelly, moist to mesic areas at moderate elevations in the mountains to above tree line.
Origin: Native
Flowers: Late May - August
Lewisia pygmaealeast, alpine lewisia, dwarf lewisia
Distribution: Occurring in the Olympic and Cascade Mountains of Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open, often gravelly, moist to rather dry areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Lewisia redivivabitterroot
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia south to California, east to Montana, Wyoming, Utah, and Colorado.
Habitat: Open gravelly and rocky areas from sagebrush plains to moderate elevations in the mountains.
Origin: Native
Flowers: April-June
var. rediviva – bitterroot
Lewisia triphyllathree leaf bitterroot, three leaf lewisia
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Montana and south in the Rocky Mountains.
Habitat: Open, usually sandy areas where vernally moist, ponderosa pine forests to subalpine meadows.
Origin: Native
Flowers: May-August