| RHODOPHYTA : Ceramiales : Rhodomelaceae | RED ALGAE |
Description: Thallus small, erect to 5 cms long with dense irregular branches. Axes polysiphonous with about 24 pericentral cells, ecorticate. Rhizoids cut off from pericentral cells.
Habitat: Very rare. No details available.
Distribution: British Isles: few records from south west of England, Wales, Ireland and Guernsey. Europe: Mediterranean, Atlantic coasts of Spain and France. Further afield: the Canary Islands, West Indies and Australia.
Distribution Map from NBN: Polysiphonia opaca at National Biodiversity Network mapping facility, data for UK.
iNaturalist: Polysiphonia opaca at iNaturalist World Species Observations database.
WoRMS: Polysiphonia opaca at World Register of Marine Species.
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| Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Polysiphonia opaca. (C Agardh) Moris et De Notaris. [In] Encyclopedia of Marine Life of Britain and Ireland. https://habitas.org/mbdp/species.php?item=ZM11171. Accessed on 2026-11-01 |