Species of shrub
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Berberis piperiana is a shrub native to the mountains of northern California and southwestern Oregon. It is found in open and wooded slopes at elevations of .
"Berberis piperiana" can attain a height of up to . Leaves are evergreen, pinnately compound with 5-9 leaflets. Berries are dark blue and waxy. The species is related to the more common Oregon-grape, "B. aquifolium", but distinguished by its shorter stature and broader leaflets.
The compound leaves place this species in the group sometimes segregated as the genus "Mahonia."
References.
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