Corallum glomerate, 8.8 cm long, 6.5 cm wide at its middle portion, 4.7 cm high. Its upper surface low convex; lower surface almost flat. The two surfaces distinguishable by (1) their corallites – those on upper surface crowded, taller; those on lower surface low, more dispersed hence peritheca obvious and (2) by their vesicles – those on lower surface abundant; those on upper surface sparse, not very recognizable.
Corallites very proliferous – buds of various ages found all over arising from bases of corallites and from peritheca. Mature corallites projecting up to 4-5 mm, truncate conical – basal diameter 4 mm, terminal diameter 3 mm; calice 1.5 mm across. Low (immature) corallites slightly tapering or cylindrical. Perithecal distances between upper surface corallites vary from absent to around 2 mm.
Corallites on lower surface 2.5 mm maximum height of mature ones; diameter at base 3 mm, at tip 2 mm; calice 1.2 mm. Maximum distance between corallites 3 mm.
Septa usually 24 in number. Large ones 12, almost equally wide, equally exsert over calicinal rim, all reaching columella, continue as prominent costae on outer surface of the theca; edges irregularly dentate, surface spinulate. Smaller septa, 12 or less, alternating with large ones, slightly projecting inward from wall, very thin, not joined to columella, slightly exsert, continued into lower, thinner costae on outer surface of theca but not extending to peritheca. Secondary costae only slightly thinner than primary one. Costal edges abundantly spinous, the spines taller towards the base of the corallite than towards the tips, thus contributing to the peculiar shape of mature corallites.
Columella small, depressed, with very few tubercles, not surrounded with paliform lobes.
Peritheca covered with spinules not arranged in series. Perithecal vesicles small, some open but most closed; very abundant on lower surface of corallum.
UPMSC-HC 517: Kangpalabo Key, Pinamungajan, Cebu (Nemenzo) 1986
