Characters: Colonies are encrusting or massive, sometimes hillocky. Columellae are compacted pinnules set well below the septo-costae. Septo-costae are not heavily granulated. Colour: Usually bright greenish-yellow, also greys and browns. Similar species: Coscinaraea exesa, which has a columnar growth-form, and corallites which are shallower, larger, and have granulated septo-costae. Habitat: Shallow reef environments. Abundance: Sometimes common