The Jepson Herbarium
		University of California, Berkeley
			Jepson Herbarium

KeyBase is a dichotomous key platform hosted by Royal Botanical Gardens, Victoria, with an interface that allows one to easily navigate dichotomous keys and "filter" them with a checklist, removing key leads that do not pertain to any terminal taxa in the checklist.

The Jepson eFlora dichotomous keys are fully integrated into KeyBase, essentially making a regional flora available for any of the Jepson bioregions. Select the region in which you found your plant, and you will be taken to a simplified version of the eFlora keys in KeyBase. (e.g. Key to Plants of the Sierra Nevada, Key to Plants of the San Gabriel Mountains) Taxon names in KeyBase link back to Jepson eFlora taxon pages.

Get Started: Select a region CA-FP  NW    NCo    NCoR      NCoRO      NCoRI      NCoRH    KR  CaR    CaRF    CaRH  SN    SNF      nSNF      cSNF      sSNF    SNH      nSNH      cSNH      sSNH    Teh  GV    ScV    SnJV  CW    SCoR      SCoRO      SCoRI    CCo    SnFrB  SW    SCo    ChI      nChI      sChI    PR      SnJt      PR exc SnJt    TR      WTR      SnGb      SnBrGB  MP    Wrn    MP exc Wrn  SNE    W&I    SNE exc W&ID  DMoj    DMtns    DMoj exc DMtns  DSon

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. If a filtered key does not bring you to an answer that matches the plant you are identifying, try using a more relaxed filter (e.g. use the Sierra Nevada filter instead of the Central Sierra Nevada Foothills filter), or use the full key if necessary.

For feedback regarding KeyBase software, contact Niels Klazenga (Niels.Klazenga@rbg.vic.gov.au)
For feedback regarding how Jepson eFlora content is displayed in KeyBase, contact the Jepson Online Interchange (interchange@lists.berkeley.edu)

	CA-FP California Floristic Province   NW Northwestern California      KR      NCo North Coast      NCoR North Coast Ranges         NCoRO Outer North Coast Ranges         NCoRI Inner North Coast Ranges         NCoRH High North Coast Ranges   CaR Cascade Ranges      CaRF Cascade Range Foothills      CaRH High Cascade Ranges   SN Sierra Nevada      SNF Sierra Nevada Foothills         nSNF northern Sierra Nevada Foothills         cSNF central Sierra Nevada Foothills         sSNF southern Sierra Nevada Foothills      SNH High Sierra Nevada         nSNH northern High Sierra Nevada         cSNH central High Sierra Nevada         sSNH sourthern High Sierra Nevada      Teh Tehachapi Mountains Area   GV Great Central Valley        ScV Sacramento Valley        SnJV San Joaquin Valley   CW Central Western California        CCo        SnFrB        SCoR South Coast Ranges            SCoRO Outer South Coast Ranges            SCoRI Inner South Coast Ranges	SW Southwestern California        SCo South Coast        ChI Channel Islands            nChI northern Channel Islands            sChI southern Channel Islands        PR Peninsular Ranges            SnJt San Jacinto Mountains            PR exc SnJt PR excluding SnJt        TR Transverse Ranges            WTR Western Transverse Ranges            SnGb San Gabriel Mountains            SnBr San Bernardino Mountains GB Great Basin Province   MP Modoc Plateau       Wrn Warner Mountains       MP exc Wrn MP excluding Wrn   SNE East of Sierra Nevada       W&I White and Inyo Mountains       SNE exc W&I SNE excluding W&I D Desert Province   DMoj Mojave Desert       DMtns Desert Mountains       DMoj exc DMtns DMoj excluding DMtns   DSon Sonoran Desert

The Jepson eFlora divides California into 35 ecologically distinct "bioregions" for the purpose of indicating where plant taxa grow. These divisions are grouped into regions, which 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

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