Calflora, a 501c3 non-profit
Distribution by County   7001    
California white oak, Valley oak
Quercus lobata is a tree that is native to California, and endemic (limited) to California.
Record Count by County

Alameda: 67 Los Angeles: 357 Sacramento: 535 Solano: 104
Amador: 23 Madera: 65 San Benito: 544 Sonoma: 227
Butte: 339 Marin: 138 San Bernardino: 3 Stanislaus: 119
Calaveras: 30 Mariposa: 49 San Diego: 1 Sutter: 94
Colusa: 87 Mendocino: 56 San Francisco: 1 Tehama: 179
Contra Costa: 171 Merced: 57 San Joaquin: 158 Trinity: 2
El Dorado: 68 Monterey: 412 San Luis Obispo: 321 Tulare: 235
Fresno: 212 Napa: 73 San Mateo: 106 Tuolumne: 13
Glenn: 91 Nevada: 58 Santa Barbara: 204 Ventura: 206
Kern: 197 Orange: 8 Santa Clara: 330 Yolo: 145
Kings: 30 Placer: 109 Santa Cruz: 15 Yuba: 128
Lake: 33 Riverside: 2 Shasta: 107

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: 10/08/2026).