Corallum frondose, less than 1 mm thin at edge, 4 mm towards center. Lower surface without epitheca; marked with radially disposed, wide elevations of varying width, separated by narrow valleys punctuated with depression. Surface of elevation appears smooth to unaided eye but under lens or microscope, costae of submicroscopic size are visible with very tine spinules particularly towards edge of corallum.
Upper surface appears crumpled. Prominent collines of varying width follow somewhat radial but sinuous courses towards edge of corallum, the spaces between cut into compartments by lower, cross collines, each compartment containing 1 or more calicinal centers.
Corallites set inside depressions (compartments) of various dimensions and without discernible pattern of arrangement – most compartments have 2 or more centers, newly separated by circumoral budding, connected with each other by laminar linkages. Fossa relatively shallow.
Septa 20-42 in single full sized corallites; a number of short ones fuse with longer ones far from columella; as thick as or thinner than intervening loculi; higher, more fuzzy ones alternating with lower, less fuzzy ones; around 60 septa per cm on collines. The regularity of septa picture is striking in this coral.
Columella rather small, usually a flat piece, sometimes elevated as a rounded tubercle.
