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Dendrogyra cylindrus

Ehrenberg, 1834

Colonies have encrusting bases on which cylindrical columns are developed that may reach 2 metres in height. Valleys are meandroid. Septo-costae are thick, in two alternating orders; they do not join at the tops of valleys and thus leave a neat groove along the tops of walls. Tentacles remain extended during the day giving columns a furry appearance.

Colour: Grey-brown.

Habitat: Most reef environments.

Abundance: Uncommon but conspicuous.

Similar species: Scapophyllia cylindrica

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Roos (1971), Cairns (1982), Zlatarski and Estalella (1982). Additional identification guides: Colin (1978), Humann (1993).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Dendrogyra cylindrus.  Caribbean.  Large colonies form tall spires of grand proportions.  Paul Humann.

Dendrogyra cylindrus.Caribbean.Large colonies form tall spires of grand proportions.Paul Humann.

Dendrogyra cylindrus.  Caribbean.  Underlying skeletal detail is seen when polyps are retracted.  Doug Fenner.

Dendrogyra cylindrus.Caribbean.Underlying skeletal detail is seen when polyps are retracted.Doug Fenner.

Dendrogyra cylindrus.  Caribbean.  Tentacles normally remain extended during the day giving colonies a hairy appearance.  Paul Humann.

Dendrogyra cylindrus.Caribbean.Tentacles normally remain extended during the day giving colonies a hairy appearance.Paul Humann.

Dendrogyra cylindrus.  Caribbean.  Detail of expanded polyps.  Pat Colin.

Dendrogyra cylindrus.Caribbean.Detail of expanded polyps.Pat Colin.

Dendrogyra cylindrus.  Caribbean.  Showing branches.

Dendrogyra cylindrus.Caribbean.Showing branches.

Dendrogyra cylindrus.  Caribbean.  Showing valleys.

Dendrogyra cylindrus.Caribbean.Showing valleys.

Dendrogyra cylindrus.  Caribbean.  Showing branch end.

Dendrogyra cylindrus.Caribbean.Showing branch end.

Dendrogyra cylindrus.  Caribbean.  Showing skeletal detail.

Dendrogyra cylindrus.Caribbean.Showing skeletal detail.