Characters: Colonies have little formation of laminae, but form clumps of pointed branch-like spires, each composed of exsert costae. Well developed colonies are clumps of spires. Corallites are conspicuous. Colour: Yellow-brown or grey. Similar species: Pectinia elongata, which has a similar growth-form but no laminae are formed. See also P. alcicornis. Habitat: Lower reef slopes and enclosed embayments, especially with turbid water. Abundance: Uncommon