Characters: Colonies are submassive or hemispherical and are frequently over one metre across. Valleys are short, broad (up to 20 mm), V-shaped and have sharp upper margins. Septa are usually thin and slope uniformly to the columellae, which usually form well defined centres. Paliform lobes may be present. Columellae are weakly developed.
Colour: Uniform grey or with brown walls and pale cream or pink valley floors.
Similar Species: Oulophyllia levis. See also other Oulophyllia species.
Habitat: Most reef environments, but especially in lagoons.
Abundance: Uncommon.
Taxonomic References: Wijsman-Best (1972); Veron, Pichon and Wijsman-Best (1977); Huang, Benzoni, Fukami et al. (2014);
Identification Guides: Veron (1986a); Sheppard and Sheppard (1991); Nishihira and Veron (1995); Pillay, Terashima, Venkatasami et al. (2002); Turak and DeVantier (2011b);
