Characters: Colonies form flat or upright unifacial explanate plates with corallites in long, roughly concentric valleys. Valleys are usually widely (6-7 mm) spaced, flat-bottomed and indistinct. Corallites are small and close together (5-8 per cm) and on the outward facing edge of valley walls (collines). Columellae are well developed.
Colour: Usually dark yellow, green or brown.
Similar Species: Agaricia fragilis, which has narrower valleys, upward facing corallites with weakly developed columellae. See also A. grahamae.
Habitat: Shallow reef environments.
Abundance: Uncommon, rare in Brazil.
Taxonomic References: Wells (1973a); Fenner (1999); Veron (2000a);
Identification Guides: Humann (2002);