Calflora, a 501c3 non-profit
Distribution by County   7010    
Quercus wislizeni  A.DC.
Interior live oak,   chapparal oak
Quercus wislizeni is a tree or shrub that is native to California, and also found in Baja California.
Record Count by County

Alameda: 33 Lake: 72 Riverside: 438 Solano: 39
Amador: 132 Los Angeles: 308 Sacramento: 224 Sonoma: 161
Butte: 339 Madera: 195 San Benito: 325 Stanislaus: 49
Calaveras: 155 Marin: 357 San Bernardino: 126 Sutter: 25
Colusa: 36 Mariposa: 209 San Diego: 176 Tehama: 198
Contra Costa: 63 Mendocino: 106 San Joaquin: 26 Trinity: 35
Del Norte: 6 Merced: 12 San Luis Obispo: 55 Tulare: 467
El Dorado: 252 Mono: 1 San Mateo: 66 Tuolumne: 222
Fresno: 333 Monterey: 105 Santa Barbara: 96 Ventura: 55
Glenn: 4 Napa: 177 Santa Clara: 84 Yolo: 23
Humboldt: 14 Nevada: 132 Santa Cruz: 55 Yuba: 139
Inyo: 21 Orange: 50 Shasta: 157
Kern: 380 Placer: 133 Sierra: 8
Kings: 1 Plumas: 3 Siskiyou: 1

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: 01/14/2026).