Colonies are corymbose, cushion-like or form tables up to approximately one metre across. They have prostrate horizontal branches with short upright branchlets. Axial, incipient axial and radial corallites intergrade; all are small, tubular and sharp edged. Branchlets tend to have a bottlebrush arrangement of radial corallites.
Pale brown, blue (which may photograph pink) or grey.