A climber or vine. The stems are twining and 9 m long. The stem can be 12 cm across. The stems have a milky sap. The leaves are oval or heart shaped. The leaf blade is 6-17 cm long by 5-17 cm wide. The flowering shoot is branched and there are many small flowers. The flowers are 3 mm across. They are white. The fruit are oval and 3 cm long. The fruit have 2 wings.
Leaves ovate-cordate, entire, acutely acuminate, base ± deeply cordate, firmly chartaceous, edge often slightly recurved in dry specimens, up to 24 by 22 cm. Panicles generally 3-or more-forked, cincinni rather rich-flowered, flowers usually close together. Otherwise as C. quinqueloba.