Urban Tree Key
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Urban Tree Key / Leaves simple / Opposite or Whorled / Opposite / <6″ wide / Palmately veined / Maples / Simple / Hairy / >3″ wide / Wide base

Leaf lobe margins smooth or sharply toothed?

Lobe margins smooth or wavy, or with some rounded teeth

Sugar Maple (Acer saccharum)

Lobe margins irregularly or sharply toothed

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

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