High-climbing vine; tendrils few or none on the flowering branches; lvs deltoid-ovate, 6-12 cm, sharply serrate-dentate, broadly truncate to shallowly cordate at base, glabrous or nearly so except at the summit of the long petiole, the terminal tooth acuminate; infls long-peduncled, arising opposite the lvs, repeatedly forked, glabrous; fls 4 mm wide, the pet glabrous; fr bluish, 7-10 mm; 2n=40. Alluvial woods, chiefly on or near the coastal plain; s. O. to Io. and e. Neb., s. to S.C. and Fla. June. (Cissus ampelopsis)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.