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Keywords: Quercus bicolor (USDA).jpg Quercus bicolor From USDA-NRCS PLANTS Database http //plants usda gov/java/profile symbol QUBI Robert H Mohlenbrock USDA SCS 1989 Midwest wetland flora Field office illustrated guide to plant species Midwest National Technical Center Lincoln NE Courtesy of USDA NRCS Wetland Science Institute Image without copyright according to the above USDA page PD-USGov Quercus bicolor Leaves of Quercus Photographs by Robert H Mohlenbrock |