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Urban Tree Key / Leaves simple / Leaves alternate / Margin wavy / Pinnately veined / Not acorn / Deciduous / Symmetrical / Erect / Dry / Margin Flat / Not rough / Bark rough / Fruits nuts

Carpinus betulus

European Hornbeam

Corylus spp.

Hazels

Male flowers in erect clusters; fruit attached to a leafy bract……….Carpinus betulus

Male flowers hanging in catkins; fruit a nut enclosed in a scale-like bract……….Corylus spp.

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

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