Berberis piperiana
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."