low growing deciduous vine or shrub, alternate leaves
This volunteer came up my garden last year, in Maryland, in the shade under a maple. This is a current picture. It's got no interest in growing upright, no central trunk, just arching woody bits, but isn't trying to climb or strangle anything either, so I'm going with 'shrub'. No flowers the first year, so no additional ID information.
What is it? Is it native (otherwise it's getting dug out)? Any help appreciated, thank you.