Tree to 8 m high. Leaves opposite, trifoliolate (occasional leaves palmately 4-or 5-foliolate or simple); petiole 1.5–9 cm long; laminae elliptic to obovate, 7.5–18 cm long, 3–7 cm wide; secondary veins 9–17 on each side of midrib, divergent at angle of c. 70°. Inflorescences several-flowered, 2.5–12 cm long; pedicels c. 1.5 mm long (to 2.5 mm long in fruit). Sepals 4–5.5 mm long, abaxially glabrous except for puberulous apex, not accrescent in fruit. Petals distinct, 4–5.5 mm long, white, abaxially densely appressed-pubescent, adaxially glabrous, persistent and not accrescent in fruit. Staminal filaments distinct, ciliate at margin; antisepalous ones glandular-muricate towards apex. Stigma punctiform. Follicles 7.5–8 mm long.