Calflora, a 501c3 non-profit
Distribution by County   5462    
Micropus amphibolus  A. Gray
Mount diablo cottonseed,   Mt. diablo cottonweed
Micropus amphibolus is an annual herb that is native to California, and endemic (limited) to California.
also called Stylocline amphibola
California Rare Plant Rank: 3.2 (review list).   CNDDB

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: 12/09/2022).