Characters: Colonies may be over 2 metres across and composed of fused cylindrical horizontal branches with upturned pointed ends. Colonies usually have a side attachment. Branches are widely spaced, equidistant and uniform in shape. Radial corallites are uniform, tubular, and neatly aligned along branches.
Colour: Mixtures of brown, blue and green with pale branch ends.
Habitat: Upper and lower reef slopes protected from wave action and inter-reef channels.