Calflora, a 501c3 non-profit
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.
also called Centaurea stoebe ssp. australis
Cal-IPC rating: high
Record Count by County

Alameda: 1 Inyo: 7 Monterey: 5 Shasta: 119
Alpine: 36 Kern: 38 Napa: 1 Sierra: 25
Amador: 22 Lake: 1 Nevada: 123 Siskiyou: 213
Butte: 29 Lassen: 103 Placer: 413 Sonoma: 7
Calaveras: 54 Los Angeles: 11 Plumas: 129 Tehama: 13
Colusa: 1 Madera: 14 Sacramento: 1 Trinity: 71
Del Norte: 36 Mariposa: 105 San Bernardino: 18 Tulare: 2
El Dorado: 155 Mendocino: 17 San Diego: 16 Tuolumne: 43
Fresno: 8 Modoc: 57 Santa Barbara: 5 Ventura: 7
Humboldt: 41 Mono: 50 Santa Clara: 10 Yuba: 3

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: 11/21/2024).