This species grows as erect colonies, often with knobbly protuberances. Latin: condylus, knob; cinereus, grey
- Müller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp. http://www.marinespecies.org/aphia.php?p=sourcedetails&id=9269
- Porter, J.S. (2004). Morphological and genetic characteristics of erect subtidal species of Alcyonidium (Ctenostomata: Bryozoa). J. Mar. Biol. Ass. U.K. 84(1): 243-252 http://www.marinespecies.org/aphia.php?p=sourcedetails&id=1681
- De Blauwe, H. (2009). Mosdiertjes van de Zuidelijke Bocht van de Noordzee. Determinatiewerk voor België en Nederland. Uitgave Vlaams Instituut voor de Zee, Oostende: 464pp. http://www.marinespecies.org/aphia.php?p=sourcedetails&id=130048
- De Blauwe, H. (2004). De zeevingers Alcyonidium condylocinereum Porter, 2004 en Alcyonidium diaphanum (Hudson, 1778) (Bryozoa: Ctenostomatida) aan de Belgische kust [Alcyonidium condylocinereum Porter, 2004 and Alcyonidium diaphanum (Hudson, 1778) (Bryozoa: Ctenostomatida) at the Belgian coast]. De Strandvlo 24(2): 74-77 http://www.marinespecies.org/aphia.php?p=sourcedetails&id=1685
This species has been recorded from the southern North Sea, English Channel and Bristol Channel. There are very few published records of the species. It can be found from the LWST level down into the shallow sublittoral.
The holotype is BMNH 2002.2.1.3 from the Dover Strait, English Channel 50.65°N, 01.51°E. Colonies are grey and have a knobbly appearance. The knobs measure about 0.5mm in diameter and stick out 2.3 mm from the colony surface. The colony has a central column with branches growing from the column at intervals along its length. Part way along its length the colony splits into two stout branches, further branches then emanate from these.
The holotype (BMNH 2002.2.1.3) colony measures 8x4.5x1 cm and the paratype (BMNH 2002.2.1.4) measures 6.5x4.5x1 cm. This species is under recorded so little is known about the full extent of colony size.
Life History and Behavior
Histological examination has shown the presence of numerous small oocytes during the development of the ovary. The presence of an intertentacular organ has also been observed. These strategies are usually associated with species that broadcast their larvae.
Colonies grow as erect, gelatinous structures, adherent to the seabed or to shells and small boulders.