What is the plant
Hi Guernsey County, from just one leaf it is really difficult to tell what you have. You really need several leaves and the petioles and see if they are attached opposite or alternate on the stem. There are a lot of clues when you look at a branch that you bring home from the woods.
You might bring back a larger branch with leaves attached to the Guernsey County OSU Extension Office and have them take a look and see if they can identify it for you.