Calflora, a 501c3 non-profit
Distribution by County   10908    
Frangula rubra  (Greene) Grubov  ssp. rubra 
Red buckthorn
Frangula rubra ssp. rubra is a shrub that is native to California, and endemic (limited) to California.
also called Rhamnus rubra ssp. rubra
Record Count by County

Alpine: 2 Glenn: 1 Mono: 4 Tehama: 12
Amador: 2 Humboldt: 1 Nevada: 19 Trinity: 5
Butte: 56 Inyo: 8 Placer: 20 Tulare: 14
Calaveras: 4 Kern: 4 Plumas: 25 Tuolumne: 12
Del Norte: 1 Lassen: 2 Shasta: 15 Yuba: 13
El Dorado: 24 Madera: 7 Sierra: 11
Fresno: 17 Mariposa: 26 Siskiyou: 1

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/23/2024).