Trees, 18-25 m tall. Bark gray, rough. Branchlets brown pubescent, brittle, glabrescent. Leaves 7-or 9-foliolate; rachis 20-50 cm, including petiole 5-6 cm; leaflet blades oblong-lanceolate, 12-25 × 5-8 cm, papery, secondary veins 11-13 on each side of midvein, base cuneate to obtuse, apex acuminate. Pseudoracemes axillary, 35-50 cm, straight, brown pubescent; rachis nodes with 2-5 flowers. Pedicel ca. 2 mm. Flowers 1.1-1.3 cm. Calyx ca. 5 mm, pubescent. Corolla white; standard orbicular, without basal calluses. Stamens monadelphous. Ovary sericeous, with 3-5 ovules. Legume linear-oblong, 7-20 × 3.5-4 cm, flat, base obtuse, apex beaked; valves leathery; both sutures obscure. Seeds 1-3 per legume, pale yellow, thickly lenticular, shiny. Fl. Apr, fr. Oct-Jan.
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