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

Castela emoryi added to 2.2 on 2013-04-30
Castilleja grisea added to 1B.3 on 2013-03-29
Heuchera rubescens var. versicolor added to 3.3 on 2013-03-15
Moneses uniflora added to 2.2 on 2013-02-25
Scutellaria holmgreniorum added to 3.3 on 2013-02-04
Rubus glaucifolius var. ganderi added to 3.1 on 2013-02-04
Phacelia ciliata var. opaca added to 3.2 on 2013-02-04
Dendromecon harfordii var. rhamnoides added to 3.1 on 2013-02-04
Dendromecon harfordii var. harfordii added to 3.2 on 2013-02-04
Antennaria lanata added to 3.2 on 2013-02-04
Silene oregana added to 2.2 on 2013-01-22
Euphorbia jaegeri added to 1B.1 on 2013-01-17
Monardella hypoleuca ssp. hypoleuca added to 1B.3 on 2013-01-07
Camissonia tanacetifolia ssp. quadriperforata considered but rejected on 2013-01-07
Castilleja ambigua var. meadii added to 1B.1 on 2013-01-04
Hesperolinon sharsmithiae added to 1B.2 on 2012-12-14
Hesperolinon serpentinum considered but rejected on 2012-12-14
Cornus canadensis added to 2.2 on 2012-12-12
Erysimum menziesii ssp. yadonii added to \N on 2012-12-11
Erysimum menziesii ssp. menziesii added to \N on 2012-12-11
Erysimum menziesii ssp. eurekense added to \N on 2012-12-11
Erysimum menziesii added to 1B.1 on 2012-12-11
Erysimum concinnum added to 1B.2 on 2012-12-11
Castilleja leschkeana added to 1A on 2012-11-27
Brodiaea sierrae added to 4.3 on 2012-11-26

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