Tree 6–25 m. high; bark smooth, grey or grey-brown.. Leaves: petiole 3–4 mm. long; leaflets 3–5, mostly alternate, the terminal one largest, the rest decreasing in size downwards, glabrous or with some inconspicuous pubescence on midrib and margins; terminal leaflet asymmetrically rhombic-elliptic to rhombic-lanceolate, narrowed to an obtuse to subacute sometimes minutely emarginate apex, 3–11 cm. long, 1.4–5.5 cm. wide; lower leaflets elliptic to ovate, down to 1 cm. long and 0.7 cm. wide.. Racemes terminal and lateral; axis ± 1.5–2 cm. long; pedicels 0.5–2.1 cm. long (excluding hypanthium), glabrous or sparingly and inconspicuously pubescent.. Flowers strongly honey-scented.. Sepals reflexed, pink-tinged, 5–6 mm. long.. Petals white, 6.5–10 mm. long, 2–4 mm. wide.. Pods obliquely obovate-elliptic, apiculate at apex, rounded at base, 5.5–7 cm. long, 3.3–4.5 cm. wide, with their upper suture transversely flattened.. Seeds ellipsoid, 2–2.5 cm. long, 1.4–1.9 cm. wide, 5–6 mm. thick.. Fig. 21, p. 123.
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