Monoecious, tendriled vines; stems 5-to 10-sulcate. Leaves alternate, petio-late, lobate; tendrils 3-to 5-branched. Staminate flowers solitary, axillary; by-panthium campanulate; calyx 5-lobate, the lobes reflexed; corolla yellow, cam-panulate, 5-lobate over halfway; stamens 3, the filaments short, slightly connate at the base, the anthers free, the theca sigmoid, flexuous. Pistillate flowers soli-tary, axillary; calyx and corolla as in the staminate flowers; ovary oblong ovoid, 3-carpellate, the ovules numerous, horizontal, the style short, connate, the stig-mas 3, obscurely bilobate; staminodes 3. Fruits fleshy, cylindric, indehiscent; seeds oblong ovate, compressed, inconspicuously marginate.
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