Trees or erect shrubs, 7-10 m tall. Bark grayish to dark brownish, thick, smooth; branches puberulent when young, later glabrous. Petiole 3-4 cm; leaf blade suborbicular, 10-15 × 9-14 cm, stiffly papery, abaxially almost glabrous, adaxially glabrous, primary veins 9-11, secondary and higher-order veins protruding, base shallowly cordate, apex bifid to 1/3-1/2, lobes slightly acute or rarely rounded at apex.
Inflorescence a raceme with few flowers or a panicle with up to 20 flowers, axillary or terminal. Flower buds fusiform, 4- or 5-ridged, with an obtuse apex. Pedicel 7-12 mm. Calyx open as a spathe into 2 lobes, one with 2 teeth and the other 3-toothed. Petals light pink, oblanceolate, 4-5 cm, clawed. Fertile stamens 3; filaments ca. as long as petals. Staminodes 5 or 6, 6-10 mm. Ovary stalked, velvety; style curved; stigma slightly enlarged, peltate. Legume linear, flat, 12-25 × 2-2.5 cm; valves woody.
Seeds compressed, sub orbicular, 12-15 mm in diam. Fl. Sep-Nov, fr. next Feb-Mar. 2n = 28.
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