Characters: Colonies are generally massive. Corallites are monocentric or form short valleys. Walls are thick, with rounded edges. Septa are thin and evenly spaced. There may be some development of columella centres and/or paliform lobes.
Colour: Usually grey- or yellow-brown with green or cream valley floors.
Habitat: Shallow reef environments.
Abundance: Usually uncommon.
Taxonomic Note: A species complex.