[Wikipedia] Hybrid Info: Quercus × morehus is a hybrid between a deciduous oak and an evergreen oak. Leaves are generally deciduous or partially deciduous and intermediate in form between Q. kelloggii and Q. wislizeni. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/30/2025).