Taxon  Report   6990    
Quercus douglasii  Hook. & Arn.
Blue oak
Quercus douglasii
© 1995 Saint Mary's College of California
Photos from
CalPhotos / Calflora
Quercus douglasii
© 2003 Joseph Dougherty/
Quercus douglasii
© 2007 Neal Kramer
Quercus douglasii, a dicot, is a tree that is native to California, is endemic (limited) to California.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Quercus douglasii
© 2012 Aaron Arthur
Family: FAGACEAE  
Genus: Quercus
Communities: Foothill Woodland


Name Status:
Accepted by JEF + PLANTS

More information about  Quercus douglasii
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 24, 2019).