Madracis contains deep water azooxanthellate colonial species. They have a diverse array of growth forms, including fragile branching, dense ramose coralla, massive columnar, nodular and encrusting forms.[3]
^Neves, Elizabeth & Johnsson, R.. (2009). Taxonomic revision of the southwestern Atlantic Madracis and the description of Madracis fragilis n. sp. (Scleractinia: Pocilloporidae), a new coral species from Brazil. Scientia Marina. 73. 739-746. 10.3989/scimar.2009.73n4739.