Corallum a confused, crowded tuft of angular stems and branches, freely coalescing; standing 6.5 cm from a limited base creeping over dead coral. Stems and branches usually almost cylindrical at base, 8 mm across, then abruptly expand very widely and break up into several branches which in turn expand and break up. Terminal branches 10-18 mm high, some attenuate, others flat with wedge-shaped tips. Surface abundantly covered all over with papillae of diverse sizes, except on the tops of the branchlets. Prominent longitudinal ridges make branches very angular.
Calicles unevenly disposed, distant, 1 mm or more from each other, diameter 0.5-0.6 mm; even with surface. Calice usually irregular in shape, not sharply cut off surrounding coenenchyme.
Primaries prominent, thick, reaching radius half points, although one or two may be underdeveloped in some calices; directives not usually distinguishable. One or 2 very narrow secondaries occasionally present. Loculi continuous into surrounding reticulum.
Intercalicinal area compact, threads of reticulum much broader than meshes; meshes round. Papillae very abundant, of diverse height and width, vertical to surface, only slightly ascending towards tips of branches; in few places, located as lower lips of calices but generally scattered without relation to calicles; on terminal branchlets, joined into ridges resembling keels. Spines low, tips fimbriated, very abundant all over.
