Commentaire : Corallum free-living. Each coral with usually one, centrally located mouth (monostomatous). The outline of varies from discoidal to slightly oval. They vary from thin to thick and from flat to slightly arched. Corallum thin and flat. The length of the fossa is 1/12 to 1/7 of the corallum length. Colony maximum diameter generally < 10 cm. The septa are densely packed and straight. The septa of lower orders are thick, solid and very high. The corallum wall is solid and, apart from the costae, it is not granulated. The costae are straight and distinct near the corallum margin, but become vague towards the centre. The lower order costae are more protruding than the other ones and have their sides covered by rows of granulations. All costal margins are finely ornamented with granular and acute costal spines.
Protection : basse