Characters: Colonies are submassive or laminar, up to 1.5 metres across. Valleys are 3-4 millimetres wide, usually perpendicular to colony margins, becoming sinuous towards the colony centre. Septa are irregular, with strong teeth. Columellae do not form centres and are not laminar.
Colour: Pale blue-grey to translucent white.
Similar Species: Leptoria phrygia has smaller valleys and has columellae which are plate-like. See also the merulinids Scapophyllia cylindrica and Merulina ampliata.
Habitat: Upper reef slopes.
Taxonomic References: Veron (1990a); Veron (2000a); Huang, Benzoni, Fukami et al. (2014);
Identification Guides: Nishihira and Veron (1995); Turak and DeVantier (2011b);