Counties:
Alameda
Amador
Butte
Calaveras
Contra Costa
Colusa
Del Norte
El Dorado
Fresno
Humboldt
Kern
Los Angeles
Mendocino
Merced
Monterey
Mariposa
Marin
Napa
Nevada
Orange
Placer
Riverside
Sacramento
Santa Barbara
San Bernardino
Santa Clara
Santa Cruz
San Diego
San Francisco
Shasta
San Luis Obispo
San Mateo
Solano
Sonoma
Stanislaus
Sutter
Tehama
Tuolumne
Ventura
Yolo
Yuba

Jepson Bioregions:
North Coast
Klamath Ranges
North Coast Ranges
Sierra Nevada Foothills
Central Coast
SF Bay
South Coast Ranges
South Coast
Channel Islands
Transverse Ranges
Peninsular Ranges