Mahonia pinnata (syn. Berberis pinnata) is a species of shrub in the barberry family. Common names include California barberry, wavyleaf barberry, and shinyleaf mahonia. It is similar to the Oregon-grape (Mahonia aquifolium), and is sometimes called the California Oregon-grape.
Mahonia pinnata is a dark green bush which resembles holly with its serrated leaves. It has one to two inch long clusters of small yellow flowers. The fruit is a sour but edible purple berry with many seeds.
One subspecies of this plant is very rare and is federally listed as an endangered species. It is known only from Santa Cruz Island, one of the Channel Islands of California, where it is known from 13 or fewer individuals.
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