NOTE: The KeyBase taxon filters are based on Jepson eFlora author's assertions of taxon ranges. As we have discovered from comparing Consortium of California Herbaria (CCH) specimen records to eFlora authored ranges in the Yellow Flag project, there are many plant populations that occur outside the eFlora authored ranges.
For feedback regarding how Jepson eFlora content is displayed in KeyBase, contact Jason Alexander (jason_alexander@berkeley.edu)
Bioregion species list changes between 2015 and 2021 (click on any link on the list below to view the html list of changes)
CA-FP California Floristic Province
NW Northwestern California Region NCo North Coast Subregion NCoR North Coast Ranges Subregion NCoRO Outer North Coast Ranges District NCoRI Inner North Coast Ranges District NCoRH High North Coast Ranges District KR Klamath Ranges Subregion
CaR Cascade Ranges Region CaRF Cascade Range Foothills CaRH High Cascade Ranges
SN Sierra Nevada Region SNF Sierra Nevada Foothills Subregion nSNF northern Sierra Nevada Foothills cSNF central Sierra Nevada Foothills sSNF southern Sierra Nevada Foothills SNH High Sierra Nevada Subregion nSNH northern High Sierra Nevada cSNH central High Sierra Nevada sSNH southern High Sierra Nevada Teh Tehachapi Mountains Area
GV Great Central Valley Region ScV Sacramento Valley SnJV San Joaquin Valley
CW Central Western California Region CCo Central Coast SnFrB San Francisco Bay Area SCoR South Coast Ranges Subregion SCoRO Outer South Coast Ranges SCoRI Inner South Coast Ranges
SW Southwestern California Region SCo South Coast ChI Channel Islands Subregion nChI northern Channel Islands sChI southern Channel Islands PR Peninsular Ranges Subregion SnJt San Jacinto Mountains PR exc SnJt Peninsular Ranges excluding SnJt TR Transverse Ranges Subregion WTR Western Transverse Ranges SnGb San Gabriel Mountains SnBr San Bernardino Mountains
GB Great Basin Province
MP Modoc Plateau Region Wrn Warner Mountains Subregion MP exc Wrn Modoc Plateau Subregion (excluding Warner Mtns) SNE East of Sierra Nevada Region W&I White and Inyo Mountains Subegion SNE exc W&I East of Sierra Nevada Subegion (excluding White and Inyo Mtns)
D Desert Province
DMoj Mojave Desert Region DMtns Desert Mountains Subregion DMoj exc DMtns Mojave Desert Subregion (excluding Desert Mtns) DSon Sonoran Desert Region
The Jepson eFlora divides California into 35 ecologically distinct bioregions for the purpose of indicating where plant taxa grow. The smallest subdivision defined as a distinct bioregions, depends on how finely each region is ecologically divided. One bioregion, the Sonoran Desert, is at the finest scale at the region-level, and is not divided into subregions. The other nine regions are further divided into two or more subregions. Seven subregions are further divided into two or more districts. All regions are grouped into three main provinces, as shown in the maps above.
Each terminal taxon treatment in the Jepson eFlora indicates the treatments in which the taxon is asserted to occur. Using this information, a checklist for any subregion, region or province can be made (see the eFlora Tools page for a tool that does exactly that).
For full descriptions of each bioregion, see Geographic Subdivisions of California
