Below is a list of all cacti found in California; the main species first, those with a photograph and full description page, followed by all other species, generally less common.
Cylindropuntia ganderi, Gander's buckhorn cholla (CA)
Cylindropuntia wolfii, Wolf's opuntia (CA)
Echinocereus mojavensis, Mojave Desert hedgehog (CA, NV, UT)
Sclerocactus polyancistrus, redspined fishhook cactus (CA, NV)