Leaves petiolate; lamina 2–5 × 1·3–5 cm., ovate, broadly ovate or circular, apex rounded, mucronate, margin entire, base rounded to cordate, penninerved with 5–6 pairs of secondary nerves, upper surface glabrous, lower surface puberulous to tomentose especially on the nerves; petiole up to 1·8 cm. long; stipules subulate, up to 6 mm. long.
Ovary immersed in the disk; style 2 mm. long and with 3 diverging branches or less than 1 mm. long and obscurely 3-lobed.
Flowers in axillary pedunculate umbels; peduncle up to c. 2 cm. long, pubescent; pedicels 7–10 mm. long, pubescent.
Climbing shrub; branchlets pubescent, provided with pubescent coiled tendrils.
Fruit obovoid, pubescent, densely reticulate-tuberculate.
Seeds 3, 3-angled or ± plano-convex; testa shining black.
Petals 1·5–2 mm. long, obovate, cucullate, unguiculate.
Sepals 2 mm. long, ovate-deltate, pubescent.
Disk 2 mm. in diam., annular, 5-lobed.
Stamens 1·5–2 mm. long.