Hello all. I am really hoping someone can help me identify the tree that goes with the leaf in the attached picture. I cannot find a tree anywhere in my yard with leaves like this or I could probably identify it. My first thought was that it was a tulip poplar or something because I do have those in my yard and they bear an initial resemblance but nothing else. A co-worker said he had seen a leaf like this before but didn't know what it was. That rules out this being a mutant leaf I guess. Any help would be greatly appreciated. Not knowing is bothering me more than it should. Thanks in advance.

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