Characters: Colonies are corymbose clumps of prostrate branches, except those from reef flats which have thickened upright branchlets. Horizontal branches are thin, diverging, curved and basally fused. The undersurfaces of branches are usually devoid of corallites. Upward projecting branchlets are irregularly spaced. Axial and incipient axial corallites are well defined.
Colour: Grey with pale branch tips.
Similar Species: Acropora aculeus has similar diverging horizontal branches but finer and more appressed radial corallites. See also A. elseyi, which has primarily upright branches.
Habitat: Shallow fringing reefs.
Abundance: Rarely common.
Taxonomic Note: Wallace (1999) considered this species as 'unresolved'. We include it here based on a set of distinctive field and skeletal characters, as illustrated. It has, as far as is presently known, a highly restricted distribution range in Sri Lanka and Bay of Bengal, and requires further study.
Taxonomic References: Veron (2000a);
