Poison Ivy has three-part leaves. I am not sure what Clemsonfor means by 'mitten leaves' but sometimes Poison Ivy has large teeth on the edges of its three-part leaves, and I guess that might make them look a little like mittens. Usually when I hear 'mitten shaped leaves' I think Sassafras.Mitten leaf is poison oak?, not a vine but a ground dweller. Also poisonois