Colonies are massive, submassive or ridged, with an even surface and dense skeleton. Corallite valleys are sinuous and uniform. Septa are uniformly spaced and are of equal size. Columellae are plate-like with a lobed upper margin and do not form centres.
Cream, brown or green, with walls and valleys of contrasting colours.
Occurs in most reef environments except where the water is turbid.
Common, especially on upper reef slopes.