Dark green to sometimes dark purplish, 1-4 inches long, petiolated, alternate, and often have 2 basal lobes or leaflets at the base. Leaves not lobed in this manner are ovate to oval. All leaves have smooth, entire margins and may have an unpleasant odor. Lobed leaves are a good identifying characteristic, however they are not always present as illustrated here. Becoming semi-woody with age, creeping, prostrate, and rooting at the nodes.
Berries contain flat, round, yellowish seeds.
Perennial vine that roots at the nodes, often with leaves that have 2 basal leaflets at the base.