Zamia furfuracea

Quercus douglasii: Blue Oak Quercus douglasii: Blue Oak- Tree identification fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Quercus douglasii (Blue Oak) Quercus douglasii (Blue Oak)- Photograph and description of this Californian species from Wikipedia. Quercus douglasii Quercus douglasii- Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology. Quercus douglasii (Blue Oak) Quercus douglasii (Blue Oak)- Detailed information on natural range, habitat, supporting soil, associated forest cover, reproduction and growth, and human uses. Quercus douglasii Quercus douglasii- Close up image of unripe acorn.