Commentaire : Corallum free-living. Each coral with usually one, centrally located mouth (monostomatous). Outline varies from circular to slightly oval. They vary from flat to highly arched. The corals are usually thick. The length of the central fossa, measured at its bottom, is 1/12 to 1/6 of the corallum length. Maximum length of the coralla up to 35 cm. The septa are loosely packed and usually straight. The septa of lower orders are thick , those of higher orders thin . The septa of lowest orders are more exsert than those of higher orders. Tentacular lobes are present on the septa of some coralla. The septal margins are finely to coarsely ornamented with regularly or irregularly angular dentations which are usually sharp, but sometimes slightly lobate in big specimens. The corallum wall is perforated. The costae are (almost) equal in size; they are straight and distinct near the corallum margin, less distinct near the centre. The costae are coarsely ornamented by conical spines which are mainly granulated at their tips.
Protection : basse