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

Are the leaf undersides hairy white or hairless and green?

Leaf undersides hairy, white, grayish white, or bluish gray

Leaf undersides hairless, green, not white

Usually paler than the upper side

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

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