Trees, 5-6 m tall. Young shoots silky puberulent, gradually glabrous. Leaves 15-25 cm; stipules caducous, subfalcate-lanceolate, silky puberulent; leaflets 17-21, ovate or oblong, 2.5-5 × 2-2.5 cm, papery, abaxially rather densely puberulent, adaxially appressed puberulent, base rounded or cuneate, apex slightly obtuse. Panicles axillary, rather shorter than leaves, 2.5-5 × 1.2-2 cm; peduncles, branches, and pedicels densely silky puberulent. Calyx campanulate, densely puberulent, 5-toothed; teeth obtuse, shorter than tube except lowest lanceolate and ca. as long as tube. Corolla white; petals rather long clawed; standard suborbicular, emarginate. Stamens 10, diadelphous (5+5). Ovary shortly stipitate, pubescent, 4-or 5-ovuled; style slender; stigma small. Legume narrowly ligulate, 2.5-5 × 0.6-1 cm, leathery, reticulate opposite 1-3 seeds, base attenuate to short stipe, apex acute. Seeds reniform, compressed, ca. 5 × 2.5 mm. Fl. Apr-May, fr. Jun-Sep.
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