University of California, Davis, Information Center for the Environment (ICE): a cooperative effort of a team of environmental scientists at UC Davis and collaborators at over thirty private, state, federal, and international environmental organizations.

This website presents the California Native Plant Society, a national leader in biological diversity conservation science and advocacy. Established in 1965, the CNPS "is a statewide non-profit organization of amateurs and professionals with a common interest in California's native plants." The site provides a variety of information and resources useful to botanists and native plant enthusiasts...