Vines woody, ca. 20 m. Leaves 1-pinnately compound; lateral petiolule ca. 1 cm, terminal petiolule ca. 3 cm; leaflets 5-7, elliptic, 7-10 X 3-4 cm, thin leathery, base rounded to slightly cordate, apex acuminate; lateral veins 6-8 on each side of midrib. Inflorescences racemose, 2-10-flowered. Pedicel ca. 2 cm in fruit. Calyx cupular, ca. 5 mm. Corolla funnelform, 9.5-14 cm; tube ca. 7 mm in diam. at base, ca. 2 cm in diam. at mouth; lobes ovate-rounded, ca. 2 cm, imbricate. Stamens 4, didynamous, inserted in corolla tube; filaments short, glabrous; anthers ca. 6 mm. Style filiform; stigma 2-lobed. Capsule long ellipsoid, compressed, 12-14 X 4-5 cm, pale green, thick leathery, base strongly constricted into a tube, apex short acute. Seeds numerous, compressed rounded, with membranous and transparent wings, ca. 3 cm in diam. Fl. Jul-Aug, fr. Oct-Nov.
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