Quercus douglasii Calflora

Distribution by County 6990

Quercus douglasii Hook. & Arn.

Blue oak

Quercus douglasii is a tree that is native to California, and endemic (limited) to California.

Record Count by County


Alameda: 84	Lake: 45	Sacramento: 140	Sutter: 24
Amador: 57	Los Angeles: 43	San Benito: 1120	Tehama: 269
Butte: 226	Madera: 144	San Joaquin: 22	Trinity: 9
Calaveras: 119	Marin: 39	San Luis Obispo: 461	Tulare: 320
Colusa: 40	Mariposa: 123	San Mateo: 50	Tuolumne: 221
Contra Costa: 165	Mendocino: 40	Santa Barbara: 134	Ventura: 8
El Dorado: 99	Merced: 60	Santa Clara: 112	Yolo: 10
Fresno: 1251	Monterey: 420	Shasta: 91	Yuba: 144
Glenn: 13	Napa: 124	Solano: 28
Kern: 498	Nevada: 78	Sonoma: 78
Kings: 44	Placer: 86	Stanislaus: 63

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]. 2025. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 01/21/2025).