Very special thanks for the photo to Peter W. Gylnn, Professor for Marine Biology & Fisheries in Miami, USA.
The coral was named in honor of Peter Glynn!
Thank you very much, dear Peter!
Characters: Colonies are spherical, 70-100 millimetres across. Corallites are polygonal, 2.5-3.5 millimetres diameter. Septa and walls are as described for Siderastrea savignyana except that there are 40-48 septa per corallite.
Colour: Light reddish-brown.
Habitat: Rocky substrates.
Similar species: Siderastrea savignyana
Text source: Corals of the World by Charlie J.E.N. Veron.