Commentaire : Corallum free-living. Each coral with several mouths. Corallum outline varies from irregularly circular to oval. The coralla are thick and vary from highly arched to a slightly cup-shaped, with a concave upper surface. The stomata are distributed almost evenly over the coral surface. Maximum length of the coralla up to 50 cm. The septa are densely packed and straight, except around the stomata, where they bend. The septa of lower orders are thicker and more protruding than those of higher orders. The septal margins are coarsely ornamented with irregularly lobate dentations. The corallum wall is perforated and covered by granulations. The costae are unequal in thickness and height, they are straight and distinct near the corallum margin, but less distinct near the centre. All costae are coarsely ornamented with short echinous spines.
Protection : basse