The Central Sierra is home to 198 rare and endangered plants. We are working to protect and preserve these unique and precious species in our region. Read below about three (3) species on which we are currently focusing.
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Chinese Camp Brodiaea (Brodiaea pallida)
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Mariposa Lupine (Lupinus citrinus var. deflexus)
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Ione Manzanita (Arctostaphylos myrtifolia)
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Since 1974, the CNPS Inventory of Rare and Endangered Plants of California has been a widely-recognized resource that directly guides rare plant education, protection, conservation planning, and land acquisition and management in California. The heart of the CNPS Inventory is our assessment of the current conservation status of our state’s rare, threatened, and endangered plants. The inventory is a web-based program, ensuring the immediate release of the most up-to-date rare plant information to help inform conservation priorities. Learn more about the CNPS Rare Plant Program.
IONE MANZANITA
1) Calflora page for Ione manzanita for an introduction to the species and its characteristics and distribution (limited to Amador County).
2) The U.S. Fish & Wildlife page on Ione manzanita reflecting the history of listing (as threatened) for that species and Ione buckwheat (Eriogonum apricum) (as endangered).
3) Diseases Threaten the Survival of Ione manzanita (Arctostaphylos myrtifolia). A report prepared in 2003 for California Dept. of Fish & Wildlife by San Francisco State Univ. Summary provided at the beginning.
4) Management of Arctostaphylos myrtifolia Parry at the Apricum Hill Ecological Reserve. A report finalized in 1989 by other individuals at San Francisco State Univ. for California Dept of Fish & Wildlife. Summary of recommendations provided at the beginning.
5) U.S. Fish & Wildlife Service page with links to species status reviews. It was listed as endangered on May 26, 1999.
6) Technical report for California Dept of Fish & Wildlife on study by Matteo Garboletto of U.C. Berkeley treating manzanita species with phosphite for root rot (Phytophthora cinnamomi), first on alternate species (2008) and then on Ione manzanita (2009). Summary provided at the beginning. It was unclear if landscape-level treatments proceded after methods were designed & found at least somewhat successful in this study.
7) First Report of Root and Crown Rot Caused by Phytophthora cinnamomi Affecting Native Stands of Arctostaphylos myrtifolia and A. viscida in California.
Abstract published in the scientific journal Plant Disease vol. 87, issue 11, pg. 1395.
Authors: T. J. Swiecki, E. A. Bernhardt, and M, Garbelotto. 2003.
May be retrieved at doi: 10.1094/PDIS.2003.87.11.1395B.