blue oak

Quercus douglasii

Summary 2

Quercus douglasii, known as blue oak, is a species of oak endemic to (found only in) California, common in the Coast Ranges and foothills of the Sierra Nevada. It is occasionally known as mountain oak and iron oak.

Sources and Credits

  1. (c) Jill Matsuyama, some rights reserved (CC BY-NC-SA),
  2. (c) Wikipedia, some rights reserved (CC BY-SA),

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