The CNPS Inventory of Rare and Endangered Plants of California is a botanical online database providing information on rare, threatened, and endangered California native plants. [1] [2] It is sponsored by the California Native Plant Society (CNPS). [2]
All plant taxa that the State of California or U.S. Fish and Wildlife Service list as being threatened species, endangered species, or rare species in California, are included in the lists. [2] [3] :10 They are continually updated with additions, changes, and deletions. [2] In 2014 the CNPS Rare Plant Program began including Lichens of Conservation Concern. [2]
The Inventory is published every three to five years and is used by the State and Federal government for conservation planning. [2] [4] It is used for scientific research, conservation and preservation, and enforcement of environmental laws in California. [2] [5]
CNPS originally developed the Inventory of Rare and Endangered Plants of California with the guidance of botanist and evolutionary biologist G. Ledyard Stebbins. [2]
The 1st Edition was printed in 1974. The last print version, the 6th Edition, was published in 2001. The 8th Edition, released in 2010 with ongoing updates, is the current database. [2]
The online database publication, which depends on volunteer contributions, is supported by the California Native Plant Society, University of California, Riverside Herbarium, and other institutions, organizations, and individuals.
The California Native Plant Society (CNPS) is a California environmental non-profit organization that seeks to increase understanding of California's native flora and to preserve it for future generations. The mission of CNPS is to conserve California native plants and their natural habitats, and increase understanding, appreciation, and horticultural use of native plants throughout the entire state and California Floristic Province.
Arctostaphylos catalinae, known by the common name Santa Catalina Island manzanita, is a species of manzanita native to Southern California.
Geothallus is a monotypic genus of liverwort in the family Sphaerocarpaceae family. It includes only the single species Geothallus tuberosus. Its common name is Campbell's liverwort. It is endemic to California, where it is known only from San Diego and Riverside Counties.
Sphaerocarpos drewei is a species of liverwort in the family Sphaerocarpaceae. It is endemic to California, where it is known from San Diego and Riverside Counties. Its common name is bottle liverwort.
The UCR Herbarium is a clearinghouse for information regarding plant species distribution in the Western hemisphere. The collection houses over 110,000 dried specimens, approximately 80,000 of which are from the United States, and 32,000 from Mexico. The collection is especially strong in the flora of Southern California and the Baja California peninsula.
Ceanothus ophiochilus is a rare species of flowering shrub known by the common name Vail Lake ceanothus, native to Southern California. It was not described until 1991.
Galium californicum is a species of flowering plant in the coffee family known by the common name California bedstraw.
Dudleya brevifolia, is a rare succulent plant known by the common name short-leaved liveforever or short-leaved dudleya. It was formerly a subspecies of Dudleya blochmaniae.
Allium yosemitense is a California species of wild onion known by the common name Yosemite onion. Most of the known populations are situated within the boundaries of Yosemite National Park.
Arctostaphylos luciana is a species of manzanita known by the common name Santa Lucia manzanita, is endemic to California. .
Arctostaphylos obispoensis is a species of manzanita, known by the common names bishop manzanita and serpentine manzanita, endemic to California.
Arctostaphylos pilosula is a species of manzanita, known by the common names La Panza manzanita and Santa Margarita manzanita, that is endemic to California.
Cordylanthus palmatus, now reclassified as Chloropyron palmatum, is a rare species of flowering plant in the family Orobanchaceae. It is known by the common names palmate bird's beak, palmate salty bird's-beak, Palmate-bracted bird's-beak, and palmbract bird's beak.
Enceliopsis covillei, known by the common name Panamint daisy, is a rare North American desert species of flowering plant in the daisy family.
Pine Hill Ecological Reserve is a nature reserve of 403 acres (1.63 km2) located due east of Folsom Lake in the Sierra Nevada foothills, in El Dorado County, California. The reserve was established in 1979, and is managed by the California Department of Fish and Game.
Plagiobothrys parishii, known by the common name Parish's popcornflower, is an uncommon species of flowering plant in the borage family.
Sidalcea oregana is a species of flowering plant in the mallow family known by the common name Oregon checkerbloom.
Deinandra minthornii — — is a rare California species of flowering plant in the aster family known by the common name Santa Susana tarplant, or Santa Susana tarweed. It is an endangered species, listed as a Threatened species by the California Department of Fish and Game, as Imperiled under the California Endangered Species Act—CESA, and on the California Native Plant Society Inventory of Rare and Endangered Plants of California.
Fritillaria biflora var. ineziana, the Hillsborough chocolate lily, is a species of fritillary endemic to San Mateo County, California. It grows on serpentinite in cismontane woodland and valley and foothill grassland at elevations that range from 295 to 525 feet It is typically found on serpentine soils and it is defined as a "broad endemic" where 85-94% of occurrences are expected to occur on ultramafic soils.
Monardella viminea is a species of flowering plant in the mint family known by the common name willowy monardella.