Centaurea stoebe ssp. micranthos Calflora

Distribution by County 9791

Centaurea stoebe L. ssp. micranthos (Gugler) Hayek

Spotted knapweed

Centaurea stoebe ssp. micranthos is a perennial herb that is not native to California.

Cal-IPC rating: high

Record Count by County


Alameda: 1	Kern: 40	Nevada: 97	Siskiyou: 226
Alpine: 38	Lake: 2	Placer: 155	Sonoma: 8
Amador: 23	Lassen: 105	Plumas: 131	Tehama: 16
Butte: 40	Los Angeles: 12	Sacramento: 1	Trinity: 72
Calaveras: 58	Madera: 19	San Bernardino: 15	Tulare: 2
Colusa: 1	Mariposa: 108	San Diego: 19	Tuolumne: 47
Del Norte: 36	Mendocino: 19	San Mateo: 1	Ventura: 9
El Dorado: 162	Modoc: 58	Santa Barbara: 5	Yuba: 3
Fresno: 15	Mono: 66	Santa Clara: 12
Humboldt: 42	Monterey: 6	Shasta: 126
Inyo: 7	Napa: 1	Sierra: 27

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: 03/13/2026).