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Quercus douglasii (Blue Oak) - http://en.wikipedia.org/wiki/Blue_Oak
Photograph and description of this Californian species from Wikipedia. |
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Quercus douglasii - http://www.fs.fed.us/database/feis/plants/tree/quedou/all.html
Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology. |
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Quercus douglasii (Blue Oak) - http://www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2/quercus/douglasii.htm
Detailed information on natural range, habitat, supporting soil, associated forest cover, reproduction and growth, and human uses. |
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Quercus douglasii - http://www.botany.hawaii.edu/faculty/carr/images/que_dou.jpg
Close up image of unripe acorn. |