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Distribution by County   11762    
Hypericum perforatum  L.  ssp. perforatum 
Klamathweed
Hypericum perforatum ssp. perforatum is a perennial herb that is not native to California.
Record Count by County

Alameda: 3 Lake: 3 Riverside: 1 Siskiyou: 2
Alpine: 1 Madera: 2 Sacramento: 5 Solano: 1
Amador: 2 Marin: 3 San Benito: 1 Sonoma: 13
Butte: 20 Mariposa: 3 San Diego: 1 Tehama: 4
Calaveras: 1 Mendocino: 2 San Francisco: 1 Trinity: 10
Contra Costa: 1 Monterey: 22 San Mateo: 34 Tulare: 1
Del Norte: 4 Napa: 1 Santa Clara: 9 Tuolumne: 1
El Dorado: 22 Nevada: 4 Santa Cruz: 7 Ventura: 1
Humboldt: 10 Placer: 12 Shasta: 23 Yuba: 5
Kern: 1 Plumas: 4 Sierra: 7

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: 04/24/2024).