Small cup corals, with red tissue. These have smaller cups than the Tubastraea, and they are usually solitary although many examples may be seen of budding. Indeed, many apparently detached cups originally were connected to others and developed from stolon-like budding.

They lack symbiotic zooxanthellae and are found in caves, under overhangs and in darkened locations.

See also Fenner, D. 1993. Some reefs and corals of Roatan (Honduras), Cayman Brac and Little Cayman. Atoll Research Bulletin 388 pp 1-30.