Rainmaker Point, Tutuila, American Samoa

Common on shallow reefs.  Hemispherical with interlocking branches.  Axial corallites short and tubular, radial corallites increasing in length toward branch tips, held closely below to rasp-like, cream or brown, often with purple tips.  Indo-Pacific and the Central NWHI, where it intergrades with Acropora valida.