Welcome to the Inventory of Rare, Threatened, and Endangered Plants of California

The CNPS Inventory of Rare and Endangered Plants has served as a resource for information about California's rare plants for over 35 years. The Inventory is a widely-recognized resource that promotes scientific research, conservation planning, and the enforcement of environmental laws. To search for information regarding California's rare and endangered plants, please click on the "Simple Search" or "Advanced Search" buttons below, or enter a word or phrase directly into the search bar to begin.

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Carrizo Plain

Additions / Changes / Deletions

Schoenoplectus heterochaetus changed from 2B.3 to 2B.1 on 2015-02-13
Cryptantha spithamaea added to 1B.3 on 2015-02-10
Kallstroemia parviflora added to 4.2 on 2015-02-02
Acmispon dendroideus var. traskiae changed from 1B.1 to 1B.3 on 2015-01-28
Sphagnum strictum changed from 2B.3 to CBR on 2015-01-21
Pterygoneurum californicum changed from 1B.1 to CBR on 2015-01-21
Orthotrichum shevockii changed from 1B.3 to CBR on 2015-01-21
Didymodon norrisii changed from 2B.2 to CBR on 2015-01-21
Eschscholzia androuxii added to 4.3 on 2015-01-20
Polemonium pulcherrimum var. shastense added to 1B.2 on 2014-12-16
Trifolium siskiyouense changed from 3.2 to 1B.1 on 2014-12-16
Malacothamnus helleri changed from 4.3 to 3.3 on 2014-12-15
Argyrochosma limitanea ssp. limitanea changed from 2B.3 to 2B.1 on 2014-11-24
Helianthus winteri added to 1B.2 on 2014-10-15
Pohlia flexuosa added to 2B.1 on 2014-10-10
Nemacladus tenuis var. tenuis added to PPD on 2014-10-08
Solidago lepida var. salebrosa added to 3.2 on 2014-10-01
Solidago gigantea changed from 2B.2 to CBR on 2014-10-01
Coptis laciniata changed from 2B.2 to 4.2 on 2014-09-30
Viburnum edule changed from 2B.1 to CBR on 2014-09-17

All Major Changes Since 6th Edition, 2001

Currently in Review

Rare Plant Status Review Forum | Forum Membership Information | Status Reviewer Form

Major Contributors
Additional Funding Provided by: Beatrice Harris \| LSA Associates \| Sapphos Environmental

Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed ].