Elm leaves with a lot of galls. Probably eriophyid mites that are causing the galls. In Cumberland Park in West Lafayette, June 1, 2013.
Link to eriophyid mites:
The tree is either American elm (
Ulmus americana) or it could be red elm (
Ulmus rubra).
Link to Ulmus americana:
Link to Ulmus rubra:
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