Shrub or small tree to 5 m high. Leaves opposite, 3-foliolate; leaflets petiolulate, the lamina elliptic or elliptic-lanceolate, 4–9 cm long, 2–3.5 cm wide, basally attenuate, acute, densely gland-dotted; lateral leaflets asymmetrical. Inflorescence axillary, 5–10 cm long, 9–15-flowered. Flowers bisexual. Sepals broadly ovate, c. 2 mm long, gland-dotted, shortly connate at base. Petals lanceolate-triangular, 6–7 mm long, acute, erect, with a small retrorse apiculum, gland-dotted, white. Stamens in male flowers c. 4 mm long. Ovary glabrous; style in female flowers slender, c. 4 mm long; stigma small, slightly lobed. Follicles 4, 12–16 mm long, c. 5 mm wide, acute. Seeds globose, slightly flattened, 5–6 mm long, black, shiny.