Characters: Polyps are elongate and up to 250 millimetres long with almost parallel sides. They are thick and heavy and usually have a strong central arch. Most primary septa extend from the mouth to the perimeter. Costae are fine and straight. There are no attachment scars except on immature specimens.
Colour: Usually brown.
Habitat: Reef slopes and lagoons.
Source reference: Veron (2000). Taxonomic references: Veron and Pichon (1980), Hoeksema (1989), Veron and Hodgson (1989). Additional identification guides: Veron (1986), Sheppard and Sheppard (1991), Nishihira and Veron (1995)