Rare Plant Data
Calochortus tiburonensis (photo by York 1986)
The CNPS Inventory of Rare and Endangered Plants of California (the CNPS Inventory) is based on the best available information on rare plant distribution and endangerment. In order to keep this information up-to-date, we rely on contributions from botanists (both amateur and professional) throughout California.
The backbone of both the CNDDB and CNPS effort is the Field Survey Form. This form is used to record field observations of rare, threatened, endangered or sensitive species ("elements").
Field Survey Form
Native Species Field Survey Form and other relevant information - links to the DFG’s Biogeographic Data Branch website. Click on the PDF document “California Native Species Field Survey Form” in order to fill out a form. This website also contains information on how to fill out the Field Survey Form.
If you have any questions about submitting information, please contact CNPS Rare Plant Botanist Aaron Sims at asimscnps.org or 916/324-3816.
Astragalus lentiginosus var. kernensis (photo by J. Shevock)
The CNPS Inventory and the CNDDB are only as good as the data received. For this reason, CNPS encourages the surveying and monitoring of rare plant taxa, especially for those plants that have localities which have not been surveyed for more than 20 years. The hope is that information can be gathered about the status of these populations so that the information present in the CNPS Inventory and the CNDDB on rare plant species is as accurate, complete and up-to-date as possible.
For more information about surveying and monitoring of rare plant taxa in your area, please contact CNPS Rare Plant Botanist Aaron Sims at asimscnps.org or 916/324-3816.