Characters: Colonies are massive or encrusting, with an undulating or hillocky surface. Corallites are less than 3 millimetres diameter and tightly compacted. Septa are in two unequal orders of 12 each and sometimes have a third order. Paliform lobes are small or absent. The coenosteum is covered with short spinules.
Colour: Pale greenish-yellow or dark green.
Similar Species: Cyphastrea japonica, which forms less massive colonies, commonly has ‘groove and tubercle’ formations and has two very unequal orders of septo-costae.
Habitat: Upper reef slopes.
Abundance: Rare.
Taxonomic References: Wijsman-Best (1980); Veron (2000a); Huang, Benzoni, Fukami et al. (2014);
Identification Guides: Nishihira and Veron (1995); Maragos (1977); Fenner (2005); Turak and DeVantier (2011b);
