Physical References:
Callegari, Jeff, and Keith Durand. Wild Edible and Medicinal Plants of California. El Cerrrito CA: Published by authors, 1977.
Clarke, Charlotte B. Edible and Useful Plants of California. Berkeley: University of California, 2005.
Harris, James G. Plant Identification Terminology. 2nd ed. Spring Lake, Utah: Spring Lake, 2001.
Keator, Glenn, and Alrie Middlebrook. Designing California Native Gardens: The Plant Community Approach to Artful, Ecological Gardens Berkeley: University of California, 2007.
Internet References:
“USDA Plants Database” http://plants.usda.gov/index.html
"International Taxonomic Information System" http://www.itis.gov
"Plants for a Future Database" http://www.pfaf.org