Colonies are composed of blunt-ended irregular columns. Corallites have thin, highly perforated walls of interconnected rods and spines. Polyps are up to 100 millimetres long and 20 millimetres diameter when fully extended.
Oral discs and tentacle tips are white, the rest of the polyps are brown or greenish-brown.
Protected turbid environments.
Common and conspicuous at the Houtman Abrolhos Islands, south-west Australia, uncommon elsewhere.