Calflora, a 501c3 non-profit
Distribution by County   1610    
Carex pachystachya  Cham. ex Steud.
Chamisso sedge, Thick headed sedge
Carex pachystachya is a perennial grasslike herb that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 1 Glenn: 5 Modoc: 2 Siskiyou: 24
Alpine: 3 Humboldt: 17 Mono: 6 Sonoma: 3
Butte: 10 Lake: 2 Nevada: 4 Tehama: 1
Calaveras: 1 Lassen: 6 Placer: 6 Trinity: 13
Colusa: 5 Madera: 2 Plumas: 22 Tulare: 14
Del Norte: 5 Marin: 1 Sacramento: 2 Tuolumne: 10
El Dorado: 14 Mariposa: 1 San Francisco: 2
Fresno: 12 Mendocino: 8 Shasta: 4

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: 08/11/2026).