Characters: Colonies are prostrate and up to 2 metres across. Branches are mostly contorted and irregularly fused except towards the periphery of large colonies where they are relatively well defined and may have upturned ends. Branches from the central and peripheral parts of the same colony have dissimilar shapes. Axial corallites are only distinguishable on well defined peripheral branches. Elsewhere axial, incipient axial and radial corallites are a confusion of different shapes and sizes and face different directions. The coenosteum is coarse.

Colour: Dull greenish-brown.

Similar Species: Acropora sukarnoi, which has a more horizontal branching pattern and less irregular corallites. See also A. meridiana, which has similarly contorted radial corallites but forms elongate branches.

Habitat: Upper reef slopes exposed to strong wave action.

Abundance: Uncommon.