Characters: Colonies are usually flat and subplocoid. Corallites on convex surfaces are clearly subplocoid, those on flat surfaces are crowded, becoming cerioid and irregular in shape, and may have up to three centres. Septa are exsert, thin and irregular; they plunge steeply inside the wall. Paliform lobes are poorly developed or absent.
Colour: A wide range, usually with contrasting corallite walls and oral discs.
Habitat: Upper reef slopes.
Source reference: Veron (2000). Taxonomic references: Wijsman-Best (1972), Veron, Pichon and Wijsman-Best (1977). Additional identification guides: Veron (1986), Sheppard and Sheppard (1991), Nishihira and Veron (1995).