Calflora, a 501c3 non-profit
Distribution by County   9240    
Sorbus sitchensis  M. Roem.
Western mountain ash
Sorbus sitchensis is a tree or shrub that is native to California.

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 09/25/2022).