Trees evergreen, to 20 m, to 40 cm d.b.h. Branchlets brown pubescent. Leaves imparipinnate, 12-16 cm; petiole 1.5-4 cm; rachis 2-2.7 cm, prolonged 1.2-1.5 cm below terminal leaflet; petiole and rachis slightly pubescent or subglabrate; leaflets 5; petiolule ca. 6 mm, impressed adaxially, nearly glabrous; blades elliptic or oblong, 4.5-9.5(-11) cm, light colored pubescent abaxially, green adaxially, base cuneate, apex acute, mucronate. Inflorescences terminal panicles or axillary racemes, ca. 8 cm; peduncle and pedicel densely appressed short brown pubescent, pedicel ca. 5 mm. Calyx teeth triangular, abaxially densely appressed brownish pubescent. Standard fan-shaped, ca. 7.5 × 10 mm, claw ca. 1.5 mm; wings elliptic, ca. 9 × 3 mm, claw ca. 3 mm; keel oblong, ca. 8 × 3-5 mm, claw ca. 4 mm. Stamens 5-10 mm, unequal. Ovary densely appressed yellow-brown pubescent. Legumes rhombic or ellipsoid, turgid, 3.3-5.6 × ca. 2.7 × 1.2 cm; valves woody, ca. 4 mm thick, densely appressed yellowish brown pubescent, internally septate. Seeds 1-4, red, ellipsoid, ca. 1.4 × 0.8 × 0.7 cm; hilum ca. 2 mm. Fr. Sep-Oct.
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