Shrubs or trees up to 15 m high with the secondary branches growing vertically upwards, not spreading, to form a wide canopy; branchlets comparatively slender, glabrous, smooth, lenticelled; leaves completely glabrous, fairly thin at flowering time, usually elliptic-oblong, and narrowing towards the obtuse or occasionally subacute apex, cuneate, sometimes broadly so, at the base; inflorescence axillary, shortly peduncled, peduncle glabrous, usually shorter than the upper branches of the inflorescence; flowers only about 5 mm long.