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Jepson Bioregions
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Click on the map to see the profile of a county.
   North Coast
   Klamath Ranges
   High Cascade Range
   Cascade Range Foothills
   Modoc Plateau
   Warner Mountains
 
   North Coast Ranges
   Sacramento Valley
   Sierra Nevada Foothills
   High Sierra Nevada
 
   Central Coast
   SF Bay
   San Joaquin Valley
   South Coast Ranges
 
   Sierra Nevada East
   White and Inyo Mountains
   Mojave Desert
   Desert Mountains
 
   Tehachapi Mtns
   Transverse Ranges
   South Coast
   Channel Islands
 
   Peninsular Ranges
   Sonoran Desert
    For more information about Jepson bioregions, please see the UC Jepson Herbarium website, or see the explanation on pages 37 - 48 of The Jepson Manual: Higher Plants of California, J. C. Hickman (ed), University of California Press, 1993.
Siskiyou Del Norte Modoc Humboldt Shasta Trinity Lassen Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Sonoma Napa Sacramento Amador Mono Solano Calaveras Tuolumne Marin San Joaquin Contra Costa Stanislaus Alameda San Francisco Madera Mariposa San Mateo Merced Fresno Santa Clara Inyo Santa Cruz San Benito Monterey Tulare Kings San Bernardino Kern San Luis Obispo Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial