A woody vine. It grows 2 m tall. The stems can be erect or twining. It grows partly attached to oak trees. The leaf stalk is flat with narrow wings. The leaves vary in shape. They are often narrowly oval and 2-3 cm long by 1.5 cm wide. They are lumpy on both surfaces. The male flowers are in groups of 5 or 6 and the female flowers occur singly.