Characters: Colonies form a complex of thin upright bifacial fronds which have thin margins. They are usually contorted, elongate, and divide irregularly. Corallites are in valleys which are generally concentric and less than 50 millimetres long. Colour: Brown, greenish or rust, sometimes with pale margins of septo-costae and sometimes with orange tentacles. Similar species: Agaricia agaricites. Habitat: Shallow reef environments. Abundance: Common.