Colonies are composed of gnarled branches that divide irregularly. They may form stands over 5 metres across. Corallites are large, composed of an interlocking network of rods and spines. Polyps are large with knob-like tentacle tips.
Pale tan when polyps are retracted. Extended polyps are amber or yellowish with white oral discs, sometimes with white tentacle tips.
Occurs only on soft substrates in deep water or in shallow turbid water protected from wave action and currents.