Wildflowers of Southern California

Contains photographs of wildflowers of the southern California chaparral, desert, mountains, and north coast indexed according to scientific, common, or family names.

California Native Plant Society

The California Native Plant Society (CNPS) is a statewide non-profit organization of amateurs and professionals with a common interest in California's native plants.

ASU Vascular Plant Herbarium

The Arizona State University Plant Herbarium is the second largest in the Arid Southwest, having over 240,000 mounted specimens.

EthnoHerbalist

Southern California Ethnobotany:  historical use of native plantsouthern California ethnobotany: historical use of native plants