Trees 12-15 m tall. Trunk ca. 20 cm in diam.; young branches pale brown, copiously lenticellate, glabrous. Leaves 30-42 cm; leaflets 4 or 5 pairs, oblong to ovate-oblong, 7-13 X 3.5-7.5 cm, glabrous, base truncate or subrounded, oblique, margin entire, apex acuminate. Inflorescences cymose-paniculate, densely flowered, terminal; peduncle 5-7 cm. Calyx campanulate, lobes ca. 5.5 mm. Corolla white, zygomorphic, funnelform; lobes broadly elliptic, ca. 2.2 X 1.5 cm, apex rounded; tube ca. 5.5 cm, base ca. 1.5 cm in diam. Ovary ca. 1.2 cm, pubescent, sessile. Style ca. 1.7 cm; stigma compressed, 2-lobed. Capsule long terete, 45-70 X 2.5-3 cm, 8-12-striate; valves thin leathery, pale black-brown; septum compressed, 8-10 mm thick, smooth. Seeds including wing ca. 3.5 X 1.5 cm. Fl. and fr. Aug-Dec.
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