Calflora, a 501c3 non-profit
Distribution by County   10191    
Penstemon davidsonii  Greene
Davidson's penstemon
Penstemon davidsonii is a perennial herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Alpine: 4 Inyo: 36 Modoc: 28 Trinity: 9
Amador: 1 Lassen: 2 Mono: 74 Tulare: 32
El Dorado: 10 Madera: 7 Shasta: 39 Tuolumne: 44
Fresno: 29 Mariposa: 3 Siskiyou: 60

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: 04/15/2026).