Characters: Colonies are massive and mostly hemispherical. Corallites are large and plocoid, tending to become flabello-meandroid with several centres. Septa are in three orders. Costae are well developed.
Colour: Pale brown with blue-grey oral discs.
Similar Species: General appearance is Favia-like. Skeletal structures are closest to Siderastrea.
Habitat: Sandy reef areas.
Abundance: Rare.
Taxonomic Note: The type species of Horastrea Pichon, 1971. A taxonomically isolated species with no clear affinities.
Taxonomic References: Pichon (1971a); Veron (2000a);