Sorbus californica, the California mountain ash, is an aggregate species of rowans. It forms a tree or bush with compound leaves (many leaflets) that are toothed almost from base to apex. It produces orange-red fruit. It is often confused with the western North American species S. sitchensis, which has leaflets with few teeth and pinkish fruit.
The species is native to western North America. It is found in the mountains of California as the name suggests, but is not an ash. It is sometimes cultivated.
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