Climber to 3 m.; stems herbaceous, glabrous. Leaf-blade broadly ovate-cordate in outline, glabrous or shortly and obscurely pubescent or more often minutely punctate, acuminate and apiculate, entire or shallowly sinuate with distinct apiculate teeth, 77–143 mm. long, 86–170 mm. broad, unlobed or palmately 3(–5)-lobed to about the middle or less; lobes triangular, triangular-ovate or elliptic, broadest at or somewhat narrowed towards the base. Male flowers 5–10, racemose on a 16–25 mm. long peduncle with 2–8 mm. long pedicels, with a coaxillary flower on a ± 15 mm. long pedicel; receptacle-tube broad, shallow, 2 mm. long; lobes strap-shaped, 4 mm. long; petals ± 6 mm. long and 4.5 mm. broad, free, yellowish or whitish. Female flowers 2–5, racemose on a 9–10 mm. long peduncle with 1.5–9 mm. long pedicels; bracts minute; ovary cylindrical, ± 9 mm. long and 6 mm. across, glabrous, truncate above; receptacle-tube very broadly and shallowly cylindrical, 1.5 mm. long; lobes lanceolate, acute, ± 7 mm. long; petals obovate-lingulate, ± 12 mm. long, 5 mm. broad, subacute. Fruits and seeds unknown.
