Monoecious, tendriled vines; stems 5-to 10-sulcate. Leaves alternate, petio-late, simple, entire or 3-lobate; tendrils simple to 2-branched. Staminate flowers solitary or in fascicles, axillary; calyx cup-shaped, 5-lobate; corolla campanulate, deeply 5-lobate; stamens 3, free, inserted on the hypanthium wall, the filaments slender, the anthers suborbicular, variously 1-or 2-locular or all bilocular, the theca apically and basally replicate. Pistillate flowers solitary, axillary; calyx and corolla as in the staminate flowers; ovary subglobose, 3-carpellate, 2-6 ovules in each carpel, the ovules erect, the styles 3, connate, the stigmas 3, peltate, 3-lobate. Fruit subglobose, indehiscent, baccate, smooth or nearly so; seeds several, com-pressed, narrowly triangular, apically acute, basally tricornuate, the testa smooth or roughened.
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