Quercus durata (California scrub oak, leather oak) is an oak endemic to California. Quercus durata var. durata is a strict serpentine endemic that grows in the Coast Ranges and northern Sierra Nevada. It is often a component of serpentine chaparral. Quercus durata is an evergreen shrub occasionally reaching 3 meters (10 feet) in height but usually much shorter. Leaves are rarely flat, usually cupped, with a thick layer of small branching hairs on the underside making it feel like felt.