Vines, apparently climbing; stems quadrangular, hirsute at least at nodes, retrorsely aculeolate along ribs. Leaves in whorls of 4(-6); petiole slightly shorter than blade, retrorsely aculeate; blade drying thinly papery, grayish green, ovate to cordate, 4-12 × 2.5-7 cm, adaxially glabrous and scaberulous, abaxially sparsely strigillose, hirsutulous, or villosulous, base deeply cordate, margins densely ciliate, apex acuminate; principal veins 3-5, palmate. Inflorescences thyrsoid, paniculate, axillary and perhaps also terminal cymes many flowered and longer than subtending leaves; axes slender, villosulous and retrorsely aculeolate; bracteoles lanceolate, 1.5-2 mm. Flowers not seen. Immature mericarp berry black and shiny when dry, densely ferruginous villous.
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