Corallum a very crowded custer of stems and branches standing on creeping base. Stems short, thick, without definite shape, extremely coalescent so only those at periphery produce partly free branches.

Terminal branchlets stout with rounded tips. Corallites 1mm across or little over, separated by distinct intercalicinal areas raised into collines with rounded summits. Wall not obvious. Septa rugged because of abundance of spinules on their surface and prominence of granules on their edges; thick so loculi slit-like. Pali conspicuous. Columella mostly a low tubercle, absent in some corallites. Intercalicinal area swell into collines (ridges)enclosing one or occasionally a row of coralllites.

Source:Nemenzo F (1981) Guide to the Philippine Flora and Fauna Vol. II Philippine Corals. NRMC Ministry of Natural Resources, Quezon City. 320 pp.