Characters: Colonies are encrusting and usually small. Corallites are cerioid, with irregular angular shapes. A central corallite is usually conspicuous. Septa are compact and columellae are small. Colonies are not fleshy.
Colour: Usually pale grey, brown or rust coloured, often mottled.
Similar species: Superficially resembles small colonies of the faviid Moseleya latistellata. If a central corallite is inconspicuous it resembles the faviid Favites. See also Acanthastrea hemprichii. and A. rotundoflora.
Habitat: Lower reef slopes protected from wave action.
Abundance: Rare except in subtropical localities of eastern Australia.
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