Unknown Vine

Please help me identify this vine. Collected at lake of the woods (NW Ontario, N Minnesota) from a wet meadow on an island.

Flowers in globose umbels. Appears to be 3 sepals and 3 sepaloid petals. 5 stamens. Styles absent. Leaves with conspicuous parallel venation. Tendrils arising from petiole bases. Even a guess at family or genus would help.

Thanks!

 

Looks like Smilax herbacea to me.

 

Thanks Axel! I think that is correct.