Climber or creeper to 5 m long; stem subglabrous. Leaves: petiole 4-8 cm long; blade (deeply) 3-7-lobate (upper leaves smaller, unlobed), 8-15 by 10-20 cm, scabrous-hairy, base narrowed into the petiole, margin crenate-dentate. Inflorescences elongate, variable, grouped into large leafy panicles, bracts minute. Male flowers fasciculate; pedicel 2-5 mm long, hairy, mostly with a bracteole; receptacle-tube narrowly campanulate, 3-4 by c. 1.5 mm; sepals c. 1 mm long; petals whitish, 5-6 by 2 mm, papillose-villose; filaments c. 2.5 mm long, anthers ± coherent into a head, c. 1.5 by 1 mm; disc elongate. Female flowers as in male flowers; ovary narrowly ellipsoid, constricted at apex, receptacle-tube villose-papillose at the throat; staminodes inconspicuous. Fruit ripening green or yellow, yellowish striped, subglobose, c. 1 cm long; fruiting pedicel c. 0.5 cm long. Seeds few, grey, ovoid, 5-6 by 3.5-4 by 2-2.5 mm.
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