Stems climbing sinistrorsely, not winged, unarmed, densely puberulous; leaves alternate; petioles up to 6 cm. long, puberulous; leaf blades suborbicular, about 10 cm. long and 9 cm. wide, sharply acuminate, deeply cordate at base, not lobed, not pellucid-lineolate, puberulous above, densely soft-pilosulous beneath, 13-to 17-nerved; staminate inflorescences 2-4 in an axil, unbranched, the rhachis densely pilosulous; flowers in small scorpioid racemes along rhachis, or some of them soli-tary, short-pedicellate, the pedicels 0.5-2 mm. long, pilosulous; perianth segments oblong, 2-2.5 mm. long, pilosulous externally; stamens 6, all fertile, borne on perianth segments, the filaments about 0.5 mm. long, slender, the anthers 0.25 mm. long, introrse, ovary densely tomentose; capsules puberulous, oblong, nearly 3 cm. long and 11 mm. wide; seeds winged all around.
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