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A climbing shrub. It has woody stems and many branches. The leaf stalks are 5-8 cm long and slender. The leaves are broadly oval to heart shaped and 10-13 cm long by 8-9 cm wide. There are teeth along the edge and a tip at the end. They are fleshy and light green. The flowers are in compound groups of about 6 flowers. The fruit are round and about 2 cm long. They are green when unripe and turn red when ripe.
Leaves simple, glabrous or with a few hairs when young; petiole up to 4·5 cm. long; leaf-lamina up to 9 × 8·5 cm., ovate to broadly ovate, acuminate at the apex, margin serrate with teeth up to 1·5 mm. long, truncate to slightly cordate at the base, 3–5-nerved at the base with 3 or more pairs of secondary nerves; stipules up to 3 mm. long, broadly oblong, glabrous.
Cymes axillary, few-flowered, sparsely branched; peduncle up to 2 cm. long, glabrous or puberulous; pedicels up to 6 mm. long lengthening to up to 15 mm. in fruit, puberulous to glabrous.
Vigorous climber; stems cylindric, never quadrangular and not developing corky wings.
Seed 1, 10 × 6 × 4 mm. flattened, ellipsoid, smooth.
Calyx 1 mm. long, entire, puberulous to glabrous.
Flower-bud up to 3·5 mm. long, conical, glabrous.
Ovary glabrous; style 1·5 mm. long, ± capitate.
Fruit 1·5 × 1 cm., ellipsoid.
Tendrils simple.
