Characters: Colonies are columnar and may be several metres across. Corallites are in shallow valleys. Columellae are compact and reach the height of the inner septal margins. Septo-costae are usually granulated and have a conspicuous granule near the valley wall. Tentacles are often extended during the day.
Colour: Uniform dark grey, or brown.
Similar species: Coscinaraea columna. Psammocora digitata has a similar growth-form but much finer corallites.
