Characters: Colonies are composed of large, tapered, prostrate branches. Axial corallites are dome-shaped with small openings. Radial corallites occur only on the upper surfaces of branches; lower surfaces are smooth. They are of mixed sizes, the smallest are immersed, the largest are bead-like, up to 4 millimetres diameter. All corallites have small openings. The coenosteum is smooth and dense, composed of fine spinules without elaborated tips.
Colour: Uniform dark tan with pale branch tips.
Habitat: Shallow to deep rocky foreshores.
Abundance: Uncommon but conspicuous.
Similar species: Acropora hemprichii , Acropora variolosa