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Urban Tree Key / Leaves simple / Opposite or Whorled / Opposite / <6″ wide / Palmately veined / Maples

Are the leaves simple or compound?

Leaves compound (with three or more leaflets)

Box Elder (Acer negundo)

Leaves simple

Urban Forest Ecosystems Institute
NRES Department
California Polytechnic State University
San Luis Obispo, CA 93407

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