Local mountain building added the Cascade and Coast ranges to the local topography.

The Coast Ranges north of San Francisco become increasingly foggy and rainy.

It is endemic to California, where it grows wild in the chaparral, woodland, and other habitat in and around the San Francisco Bay Area and Coast Ranges to the north.

In the Coast and Cascade ranges in western Oregon home range overlap averaged 68% between members of a pair and 12% for individuals in neighboring territories.

In the southern elements of the Inner Coast Ranges the hybrid oak Quercus alvordiana occurs from Carmel Valley to the Tehachapi Mountains.

It is endemic to California, where it grows in the Coast Ranges from the Bay Area to the hills north of the Los Angeles area.

It is endemic to California, where it grows in dry, shrubby habitat in the San Francisco Bay Area and the Coast Ranges to the north, often on serpentine soils.

The semota variety grows in the Sierra Nevada and Coast Ranges as far south as Los Angeles County.

It is endemic to northern California, where it grows in the Coast Ranges north of the San Francisco Bay Area.

It is endemic to California, where it grows in the Coast Ranges from the North Coast Ranges to the Temblor Range.