Characters: Colonies are corymbose clumps, usually with neat evenly spaced delicate branchlets, but branchlets may be irregular and prostrate. Axial corallites are long and tubular. Radial corallites are arranged in a neat rosette and have slightly flaring lips. Colour: Yellow, cream, green or blue. Colours may be bright with distinctively coloured corallite lips. Similar species: Acropora vermiculata, which has short axial corallites. See also A. selago, which has scale-like radial corallites not arranged in a rosette. Corymbose A. pulchra has smaller, scale-like radial corallites. Habitat: Upper reef slopes. Abundance: Common in the western Pacific and Red Sea, uncommon elsewhere