Skip to Content
Sign up
Report an error

Plerogyra discus

Veron and Fenner, 2000

Colonies are flabello-meandroid with valleys completely separated. Sometimes living parts of colonies are separated by dead basal parts. Valleys are approximately 20 millimetres wide and divide infrequently. Primary septa are approximately 10 millimetres exsert and are rounded in shape. They plunge steeply within the valleys and do not form columellae. Polyps have mantles up to 50 millimetres wide which obscure the underlying septa. These mantles have elongate vesicles which vary greatly in degree of inflation.

Colour: Grey, usually with vesicles darker than mantles.

Habitat: Lower protected reef slopes.

Abundance: Uncommon.

Similar species: Plerogyra sinuosa

Taxonomic note: Source reference: Veron (2000). Taxonomic reference: Veron (2002).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Plerogyra discus.  Philippines.  A large colony of compact mantles.  Jim Maragos.

Plerogyra discus.Philippines.A large colony of compact mantles.Jim Maragos.

Plerogyra discus.  Ryukyu Islands, Japan.  A small colony.  Charlie Veron.

Plerogyra discus.Ryukyu Islands, Japan.A small colony.Charlie Veron.

Plerogyra discus.  Philippines.  Detail of valley. Two exsert septa can be seen on the lower wall of the valley..  Charlie Veron.

Plerogyra discus.Philippines.Detail of valley. Two exsert septa can be seen on the lower wall of the valley..Charlie Veron.

Plerogyra discus.  Solomon Islands.  A large polyp making a home for a shrimp.  Jim Maragos.

Plerogyra discus.Solomon Islands.A large polyp making a home for a shrimp.Jim Maragos.

Plerogyra discus.  Philippines.  Showing a valley.

Plerogyra discus.Philippines.Showing a valley.

Plerogyra discus.  Philippines.  Showing a corallite.

Plerogyra discus.Philippines.Showing a corallite.

Plerogyra discus.  Philippines.  Showing septa.

Plerogyra discus.Philippines.Showing septa.