3 species
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Mahonia aquifoliumholly-leaf Oregon-grape, shining Oregon-grape, tall Oregon-grape
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to Northern California, east to northern Idaho and western Montana.
Habitat: Sagebrush slopes and open woods.
Origin: Native
Flowers: March-May
Growth Duration: Perennial
Mahonia nervosaCascade Oregon-grape, dull Oregon-grape
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to western Montana.
Habitat: Generally in light woodland and forest edge.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Mahonia repenscreeping Oregon-grape, low Oregon-grape
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Sagebrush valleys to open forested slopes.
Origin: Native
Flowers: April-June
Growth Duration: Perennial