Leaves: stipules connate, intrapetiolar, with upper parts normally absent; petiole with rachis 6.5–25 cm long; leaflets 3–4(5) pairs, (4)7–19 × 2–7.8 cm (larger on coppice shoots), ovate, elliptic or oblong, rounded to cuneate at the base, acute to obtuse or retuse at the apex, glabrous to shortly tomentose; lateral nerves (8)11–16 on each side of midrib.
Panicles terminal or axillary, much branched, ± dense, ultimate raceme branches short, 3–8 cm long, ± shortly brown-tomentose to almost glabrous; bracts 3–4 mm long; pedicels of open flowers 3–4(15) mm long; bracteoles brown to greenish brown, 10.5–16 × 6–9 mm.
Petals white; upper petal 9–12 × 6.5–8 mm, obovate or oblong-obovate, bilobed or deeply emarginate; other 4 petals 7–12 × 3–5 mm.
Tree, sometimes shrubby and flowering when no more than 1 m tall, 1–15 m tall; bark grey to brown, fissured and scaly.
Pods large, 19–35 × 6–8 cm, rusty-tomentose to glabrescent.
Sepals white.
Stamens 10.