Corallum pedicellate, caespito-corymbose; circular around 30 cm diameter, 16 cm high; base 9 cm across; upper surface convex. Branches very crowded, very irregular in diameter, 1-2 cm or more; lower surface only slightly flattened or not at all, distantly coalescent; branchlets somewhat similar to those on upper surface but fewer and oriented to general direction of growth. Upper branchlets very proliferous, up to 6-7 cm high, topped by exceptionally tall axial corallites surrounded at base by cluster of similar corallites but lower; apices 2-3 cm apart. Pedicel around 9 cm wide, devoid of corallites.
Axial corallites extremely exsert; tall, tapering; one without buds has these dimensions: height 26 mm; diameter at base 6.5 mm, at middle 5.5 mm, at apex 3.5 mm, diameter of calice 0.8 mm. Septa thin; 2 cycles; primaries reaching half radius points, directives slightly wider; secondaries half as wide. Wall thick, dense; edge somewhat rounded, outer surface pilose, covered with crowded spinules of even height; pores not distinct; no costules, no serial arrangement of spines.
Radial in 3 kinds: very tall, resembling the axial, but lower and narrower – abundant towards apical region; nariform corallites mixed with the tall ones but most abundant on peripheral branchlets; flush or subimmersed corallites also among tall ones but most abundant on central branchlets. The first type are tapering, high cone, calice usually oval, subterminal. Septa variable in development – some have 2 complete cyles, others have one, still others have only the directives conspicuous, the other primaries being very slight ridges. Nariform and subimmersed corallites have narrow septa, sometimes poorly developed but 2 directives always conspicuous; small secondaries occasionally present. Wall dense, abundantly echinulate on tall radials similar to axial corallites; reticulate on other types of corallites.
Intercalicinal areas spongy; threads narrower than meshes, coarser than that on calicinal wall. Spinules dispersed.
