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A small creeper. It arises from a tuberous rootstock. The stems are square. There are a few hairs. It has tendrils. The leaves are simple. The leaf blade is 10 cm long by 6 cm wide. They are oval and have some teeth near the ends. The flowering stalks are 4-10 cm long and opposite the leaves. The flowers are pink. The fruit are black or red and 1.5 cm long by 1 cm wide. There is one seed about 13 mm long by 8 mm wide.
Leaves simple; petiole 1–6·5 cm., leaf-lamina up to 10·4 × 6·2 cm., ovate-oblong, cuspidate at the apex, margin remotely serrate, slightly cordate, truncate or rounded at the base, glabrous except sometimes pubescent at the base underneath and along principal nerves; stipules 2 mm. long, triangular, auriculate.
Cymes 4–10 cm. long, leaf-opposed; peduncle ± 1 cm. long lengthening to 2 cm. in fruit, glabrescent; pedicels ± 5 mm. long lengthening to 10 mm. or more in fruit, appressed-pubescent or glabrescent; bracts and bracteoles 0·5 mm. long, glabrous, ciliate.
Climber; stems quadrangular, very sparingly pubescent or glabrescent; tendrils present.
Flower-bud ± 4 mm. × 2 mm., conical, acute or acuminate at the apex, glabrous.
Ovary glabrous; style 1·5 mm. long; stigma subcapitate.
Seed 1, up to 13 × 8 mm., smooth, with dorsal crest.
Fruit black or purplish-red, 1·1–1·8 × 0·8–1 cm.
Calyx 1 mm. long, subentire, glabrous.
A large herbaceous climber
Ripe fruits black
Pinkish flowers
