Characters: Colonies are massive to encrusting. Corallites are in short valleys with acute walls. Septo-costae are generally in three orders and are widely spaced. Columellae are poorly developed or absent. Colour: Yellow-brown or pinkish-brown, sometimes mottled. Similar species: Pavona varians, which has less well developed ridges (collines) and usually two orders of septa. See also Gardineroseris planulata. Habitat: Shallow reef environments. Abundance: Usually uncommon but distinctive.