Ampelopsis brevipedunculata? And something this pretty can't be good for you, right? Well, it is an imported plant that can be invasive. This one is a known invasive from Massachusetts to Virginia.

This is sort of like ice cream. A little is good, but if your whole diet is ice cream, then problems ensue. Allowing this plant to grow is like converting to an ice cream diet. Things go wonderful for a while.

Edit: If Flora says Parthenocissus, I would go with that ID. The color of the berries wasn't quite right, but I ascribed that to decay. Now I ascribe that to incorrect ID.

This post was edited by Dzitmoidonc on Sun, Nov 24, 13 at 12:31

I have never seen Ampeloposis brevipedunculata but I'm pretty sure this plant is Parthenocissus tricuspidata, Boston Ivy.

Here is a link that might be useful: Boston Ivy

Seems like Boston Ivy. Did once plant Amelopsis, for the fantastic little berries. Still have it as an invasive pest here. Would have never let it out of a pot and hung it over a place where the berries would fall on stone. A monster.