Commentaire : Corallum free-living. Each coral with several mouths by budding inside the axial groove. The outline of the corals is elongate with the ends varying between tapering and rounded. The coralla are thick and vary from flat to highly arched. The length of the central fossa (or axial groove), measured at its bottom, is 1/4 to 2/3 of the corallum length. Maximum length of the coralla up to 50 cm. The septa are very densely packed and straight. The septa of lower orders are thick , those of higher orders thin. The septa of the first orders are slightly more protruding than those of the last orders. The septal margins are coarsely ornamented with irregularly angular dentations. Their number varies from 2 to 8 per cm. The corallum wall is perforated and covered with granulations. The costae are almost equal in size, they are straight and distinct near the corallum margin, but less distinct near the centre. All costae are coarsely ornamented with spines which vary from blunt and granular at the tips to spinose.
Protection : basse