Colonies may be large (over 4 metres across) and form dense thickets of frequently dividing branches. Branches are 7-9 millimetres thick and slightly tapered. Axial corallites are prominent. Radial corallites are rounded, tubular and appressed except towards branch tips, and are arranged in rows.
Grey-brown, usually with pale yellow corallite tips.
Mid reef slopes exposed to strong currents.