831 species

Agaricia undata

(Ellis and Solander, 1786)


Lamarck, 1801

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);

COTW History since Veron (2000a)
  • Family: All families are currently under review
  • Genus/species: No change