Colony a diffused phaceloid formation, about 5.5 cm long; composed of corallites in various stages of development; growing around a small piece of wooden twig.
Corallites cylindrical, unequally distant from each other – some completely separate; others adhering to each other from base to calicinal rim. Full grown corallite 6-7 mm tall, many bearing buds near their bases; calice 8 mm across. Not enclosed in epitheca.
Septa around 36 in mature calices. Primaries thickest, most exsert over calicinal rim (up to 2 mm), reaching columella, their edges either bearing 1 or 2 lobulate teeath or simply undulate or subentire. Secondaries similar to primaries but thinner and less exsert. Tertiaries lower, thinner and less exsert than secondaries; do not reach columella, most join secondaries at their lower ends. Quaternaries appear as very low ridges against the inner surface at the theca, slightly exsert over the thecal rim, their inner ends free. All septal surfaces sparingly granular. Costae low but obvious, covered with granules not in rows or series, crossing peritheca to join those of neighboring corallites.
Columella prominent, a solid body with few low tubercles on the surface.
SU 307: Balicasag Island, Bohol (Lawton C. Alcala) 1983-holotype
