Corallum an almost globular, very crowded cluster of foliated branches, 8.6 cm longest diameter, 6.5 cm high. Branches grow towards all directions; delicate, twisted, ramified, crispate, unifacial. General tendency is for a branch and all its subdivisions to curl so that they are convex on calicular side, concave on non calicular surface. Length of branch 3.5 to 4.5 cm. Tips very thin, around 0.5 mm; very fragile, 3-7 mm across, all curled.
Non-calicular surface smooth, except on terminal branchlets which show low costae becoming obvious towards edge. On calicular surface, calices distant, 7-10 mm apart or more; recognizable as depressions with converging septo-costae around; distributed singly and sparsely along length of branches. Calice oval, around 1 mm longest diameter, set transverse to septo-costae. Septo-costae thick, smooth, 2-3 times thicker than intervening space; slightly exsert beyond edge of branchlets; on expanded portions, new septo-costae, usually slightly narrower than older ones, inserted among latte fill up gap. At bottom of calicinal fossa, few septo-costae continuous across but notched to produce depression. Sides of old septo-costae marked with submicroscopic granules.
Columella absent, although few of older calices may have single tubercle at center arising from septo-costae crossing them.
This is a very beautiful, fragile coral. In some respects it resembles L. digitata Vaughan = L. papyracea (Dana). The present species differs from the older one on the abundance and crowdiness of the branches, the almost complete absence of columella and the curling of the folia which presents the non-calicinal surface on the outside.
This species is named in honor of Mr. Evaristo Zambo.
