Fl. Bor.-Amer. 1: 159. 1803.
Lianas, moderately high climbing. Branchlets green, glabrous. Leaves simple; petiole ± equaling blade; blade ovate, 5–12 × 4–9 cm, usually unlobed, sometimes shallowly 3-shouldered, base truncate to subcordate, margins coarsely and irregularly serrate, apex acute to acuminate, surfaces glabrous or abaxial surface sparsely puberulent. Inflorescences ± equaling to longer than leaves. Flowers yellowish green. Berries ripening from green to orange, rose, purple and finally blue, subglobose, 6–10 mm diam. 2n = 40.
Phenology: Flowering late Apr–Jun; fruiting Jul–Sep.
Habitat: Stream and riverbanks, floodplain forests, wet woodland borders, lowland thickets, fencerows.
Elevation: 0–1000 m.
Ala., Ark., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Miss., Mo., Nebr., N.C., Ohio, Okla., S.C., Tenn., Tex., Va., W.Va.
Reports of Ampelopsis cordata from Connecticut (for example, G. C. Tucker 1995) are based on misidentified material of A. aconitifolia.