Characters: Polyps are usually circular, flat or arched. Septa are thin with fine conical or granular teeth. Small tentacular lobes may be present. Costae are fine. There are no pits between the costae. Septa may form irregular patterns in turbid environments.
Colour: Usually brown.
Habitat: Reef slopes and lagoons.
Source reference: Veron (2000). Taxonomic references: Veron and Pichon (1980), Hoeksema (1989). Additional identification guides: Veron (1986), Sheppard and Sheppard (1991), Nishihira and Veron (1995).