Notes: Cream-gray to yellow lobes with a top oscule, to high, thick-walled tubes. It may also be cushion-shaped with scattered, slightly elevated oscules. Consistency tough. There is geographic variation in megasclere spicule calthrops size, being larger and stouter in the Southern Caribbean. There are several new Plakinastrella recently described from Brazil (Moraes & Muricy, 2003; Domingos et al., 2013) that need to be compared in detail with this species.

Author Reference: (Uliczka, 1929)

Link: World Porifera Database