Woody climber, entirely glabrous. Leaves: petiole 3–14 cm long; lamina usually triangular to ovate, 8–17 cm long, 5–13 cm wide, sometimes with basal triangular or rounded lobes, usually truncate or slightly cordate at base, with reticulation prominent on both surfaces, basal glandular patches absent. Male inflorescences axillary or cauliflorous, 3–15 cm long, basally with dense spikes to 1.5 cm long, apically spiciform. Male flowers sessile; sepals 7–9 in 3 whorls, innermost sepals 2 mm long; petals 1.25 mm long; stamens 1.5 mm long. Female inflorescences paniculate, to 30 cm long. Female flowers: pedicel 1–1.5 mm long; staminodes 1–1.5 mm long; carpels 1–1.5 mm long. Drupes red; endocarp subobovoid, 16–18 mm long, surface densely spinulose.