Characters: Colonies are flat plates with short thick digitate branchlets. Corallites have thick rounded walls and wide openings. Axial corallites are indistinct. Radial corallites are appressed, becoming nariform near branch ends. Colour: Brown. Similar species: Acropora branchi, which occupies the same habitat, is distinguished by having highly fused basal branches and exsert axial corallites. See also A. gemmifera, which has longer branchlets and more exsert basal radial corallites and A. monticulosa, which has corallites in rows. Habitat: Upper reef slopes and tidal pools. Abundance: Common in South Africa, uncommon elsewhere.