|Coast Live Oak on Mt. Royal, near Hill|
The Coast Live Oak, or Quercus agrifolia, is native to California. More specifically, it's native to a region known as the California Floristic Province, which Wikipedia describes as "a floristic province with a Mediterranean climate located on the Pacific Coast of North America with a distinctive flora that bears similarities to floras found in other regions experiencing a winter rainfall, summer drought climate like the Mediterranean Basin."
You can usually identify the tree by the bark, which I can best describe as being in high relief, with a deeply craggy, almost stony look to it. The leaves are relatively small, roundish, and dull (i.e., not glossy).
|Detail of leaves.|
The genus name, Quercus, is simply Latin for "oak." Interestingly, the oak genus is native to North America -- though the oak became the national tree of, among other places, Germany, England, Poland, and Serbia. Apparently, Congress also designated the oak as our national tree in 2004. I don't think that got much press.
The Spanish names for the Coast Live Oak are encino(a) and encinitas ("little oaks"). And that's where the names for Encino and Encinitas came from.