Tree 6–18 m. high, with umbrella-shaped crown; bark smooth, grey, with the outer surface peeling off and papery.
Leaves with (1–, fide Roti-Michelozzi)2–5 pairs of pinnae; leaflets (4–)6–15 pairs, elliptic-oblong, 1–3.5 cm. long, 0.45–2 cm. wide, rounded at apex, minutely appressed-puberulous on both surfaces.
Inflorescences of 4–9-flowered racemes, minutely and thinly puberulous (including the calyces outside).
Pods 15–24 cm. long, 2.5–3.5 cm. wide.
Ovary glabrous or nearly so, except for some pubescence on stipe and margins.
Petals: the upper one 4.2–5.5 cm. long, 1.8–2.2 cm. wide, oblanceolate or obovate, bright yellow; the lateral and lower ones ± 2.8–3.5 cm. long and 1.5–2.2 cm. wide, with a more rounded or somewhat rhombic lamina, white; all, especially the upper one, ± distinctly tapering and pointed at apex.