A stab in the dark, but maybe Humulus lupulus?

I know they usually have lobed leaves, although they are highly variable, and can be single like on this plant, but it's also strange that there aren't any other even partially lobed leaves on the plant at all. I've had a hops vine for a long time. I just wanted to initiate something, because it is interesting. I really have no idea what it could be. It has to bloom sometime.,

Yea, I don't think it's a Hops vine...

Here's a new picture of one just resprouting this year:

^ Ah, ding, ding, ding! Tragia brevispica (Shortspike Noseburn) looks like we have a winner!

what are you saying it dont sting i call it stinging nettle vine and it stings like hedoubletoothpiks! and the seeds come in tri pods and its found in arkansas as well i agree it looks like the tragia and probably is its all over my garden!