Vines. Branchlets terete, glabrous. Leaves opposite, (2 or)3-foliolate; petiole 1.5-2.5 cm; leaflet blade ovate-lanceolate, membranous, glabrous adaxially, tufted hairy in vein axils abaxially, base rounded-cuneate, apex caudate-acuminate; primary veins 6-8 on each side of midrib; terminal leaflet 7-8.5 × 2.3-3.5 cm, petiolule 1.6-1.8 cm; lateral ones 4.5-6.5 × 1.3-2.5 cm, petiolule 1-3 mm. Cymes or paniculate cymes axillary, 3-7-flowered; bracts linear, 1.5-2 mm, sparsely puberulent. Pedicel 2-11 mm. Calyx cupular, glabrous; lobes 5, minutely deltate or almost truncate, less than 0.5 mm. Corolla white; tube ca. 2 cm; lobes 5, oblong, 6-8 mm. Fruit not seen. Fl. Nov.
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