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Leaves simple, glabrous or with a few hairs on the petioles and lower surface of the leaf when young; petiole up to 10·8 cm. long but usually shorter; leaf-lamina up to 13 × 13 cm. but usually somewhat smaller, circular to broadly ovate, acuminate at the apex, margin repand-denticulate with teeth usually c. 1 mm. long, cordate at the base, 3–5-nerved at the base with 4 pairs of nerves above; stipules subcircular, glabrous, up to 1·5 × 1·5 mm.
A creeper. The young stems are 4 sided. Older stems are 3-4 cm across. There are broad corky wings. It has simple tendrils. The leaves are simple and broadly oval. They are 13 cm long by 13 cm wide. They are heart shaped at the base. There are slight teeth along the edges. The leaf stalk is 11 cm long. The flowers are in branched clusters in the axils of leaves or near the ends of branches. The fruit are oval and 8 mm across.
Cymes terminal and axillary, much-branched; peduncle up to 4·5 cm. long, glabrous; primary branches of inflorescence sparingly pubescent; pedicels up to 8 mm. long, pubescent, lengthening to 13 mm. in fruit and becoming glabrous.
Vigorous climber; stems ± quadrangular, glabrous, becoming woody when old and developing longitudinal corky wings up to 1·2 cm. broad on the angles; tendrils simple.
Seeds up to 4 per fruit, only 1 usually becoming fully developed, smooth, c. 6 mm. long with one well-marked crest and 2 subsidiary ones.
A climber with tetragonal stems becoming woody with age and bearing 4 or more corky wings
Calyx 1 mm. long, pubescent when young.
Flower-bud conical, up to 3 mm. long.
Ovary glabrous; style 1–2 mm. long.
Fruit c. 8 mm. in diam., glabrous.
Fruits reddish when ripe.
Flowers greenish-white
Petals glabrous.
