A weak herbaceous climber, with a tuberous root stock; stem and branches hollow more or less glabrous, young parts puberulous. Leaves orbicular or broadly cordate 7-15 x 8-15 cm, 3-7 lobed, lobes acute, serrate-dentate, ± glabrous on both sides; petiole 3-5 cm long, stipules minute, deciduous. Inflorescence a compact thyrsoid cyme; peduncle 6 7 cm long, ending in a long bifurcate tendril. Flowers numerous, deep reddish. Clayx truncate or obscurely 5 toothed. Petals 5, oblong. Ovary 10-lobed at apex, sunken in the disc, style absent; stigma cup shaped. Berry globose, black, 6-7 mm, 2 seeded, rarely 3 seeded. Seeds elliptical, margin rugose, transversely with a linear tubercle on the back and bluntly ridged on the face.
Flowering Period: May-August ; Fruiting Period: October.