Calflora, a 501c3 non-profit
Distribution by County   1851    
Centaurea melitensis  L.
Maltese star thistle,   Napa star thistle,   Tocalote
Centaurea melitensis is an annual herb that is not native to California.
Cal-IPC rating: moderate
Record Count by County

Alameda: 198 Kings: 27 Plumas: 1 Shasta: 11
Amador: 19 Lake: 38 Riverside: 823 Siskiyou: 5
Butte: 52 Los Angeles: 1318 Sacramento: 12 Solano: 12
Calaveras: 43 Madera: 91 San Benito: 361 Sonoma: 87
Colusa: 12 Marin: 915 San Bernardino: 142 Stanislaus: 16
Contra Costa: 138 Mariposa: 581 San Diego: 2459 Sutter: 5
El Dorado: 44 Mendocino: 85 San Francisco: 43 Tehama: 64
Fresno: 140 Merced: 30 San Joaquin: 5 Trinity: 8
Glenn: 5 Monterey: 246 San Luis Obispo: 250 Tulare: 227
Humboldt: 20 Napa: 26 San Mateo: 435 Tuolumne: 1173
Imperial: 7 Nevada: 49 Santa Barbara: 303 Ventura: 993
Inyo: 9 Orange: 417 Santa Clara: 230 Yolo: 7
Kern: 118 Placer: 18 Santa Cruz: 87 Yuba: 5

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: 12/03/2024).