A yam. It keeps growing from year to year by sprouting from the tubers. The stems do not have thorns. The stems grow 16 m long. They twine to the right. There is one tuber. It is a flattened round shape. It can be 30 cm long and 15 cm wide. It grows at the end of a stalk and can be 30 cm in the soil. It has yellow flesh. It does not have bulbils. The leaves are simple and soft. They occur alternately on thin stems. They occur opposite on thicker stems. The leaf stalk is 6 cm long. The leaf blade is oval and 15 cm long by 7 cm wide. The male flowering stalks are 60 cm long. The female flowering stalks are 50 cm long. The capsule is large and has wings.