Figure 4 in Preliminary study on Acropora (Scleractinia: Astrocoeniina: Acroporidae) of the Persian Gulf, with emphasis on the north and northeastern areas

Figure 4. Acropora horrida: a) portion of colony; b) portion of branch; c) SEM micrograph showing terminal part of branch; d) SEM micrograph showing coenosteum on radial corallite; e) SEM micrograph showing 2 simple, laterally flattened spinules between radial corallites; f) top view of axial corallite, note the absence of secondary septal cycle; g) high-magnification SEM micrograph showing ornamentations on coenosteum between radial corallites.