"Pseudosiderastreamay be easily overlooked because of its small size and inconspicuous growth form. Even so, it is not a common coral. There is a single species." (Dr. Elizabeth M. Wood, 1984).
"Pseudosiderastrea forms encrusting or massive colonies that are generally less than 10 cm in diameter and are unlikely to exceed 15 cm. They are pale brown, gray or pinkish in color, with the corallite walls paler or white. Corallites are crowded, with shared walls. They are polygonal or rounded but may be irregular in shape when in the process of budding. Diameter is generally between 2 and 4 mm. The fossa in shallow, and the walls appear as a narrow ridge without a midline. Septa are closely packed and visible as fine lines running between adjacent calice centers." (Dr. Elizabeth M. Wood, 1984).