Characters: Colonies are encrusting to submassive. Corallites are deep, monocentric or with 2-3 centres together. Centres are separated by collines of irregular height and which run in irregular directions. Long and short septo-costae clearly alternate. Colour: Uniform tan or mottled yellow-brown, sometimes with green mouths. Similar species: Agaricia agaricites, which develops fronds rather than retains a submassive growth-form. Habitat: Most reef environments except shallow lagoons. Abundance: Uncommon.