Calflora, a 501c3 non-profit
Distribution by County   6272    
Petrophyton caespitosum  (Nutt.) Rybd.

(not an active name)

Mat rockspirea, Rock spiraea
Petrophyton caespitosum is a shrub that is native to California, and also found elsewhere in western North America.
Record Count by County

Fresno: 9 Mono: 15 Tulare: 4
Inyo: 77 San Bernardino: 37

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/22/2026).