RHODOPHYTA : Palmariales : RhodophysemataceaeRED ALGAE

Rhodophysema elegans (P Crouan et H Crouan ex J Agardh) Dixon


Description: A thin crust of compact filaments, smooth.

Habitat: Epilithic on stones glass, epiphytic or epizoic on molluscs and maerl. Intertidal pools or sublittoral to 10 m.

Distribution: Widespread around the British Isles England, Scotland, Wales and Ireland. Europe: Atlantic coast of France, Baltic Sea, Norway, Faroes and Iceland. Greenland. Atlantic coast of North America: Canada, Maine to Massachusetts. Further afield: the Pacific.

Similar Species: There are many small encrusting, non-calacreous, algae which are similar and difficult to identify. Rhodophysems feldmannii Cabioch; Rhodophysema georgii Batters.

Distribution Map from NBN: Rhodophysema elegans at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Rhodophysema elegans at iNaturalist World Species Observations database.

WoRMS: Rhodophysema elegans at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Rhodophysema elegans. (P Crouan et H Crouan ex J Agardh) Dixon. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM2470. Accessed on 2026-11-01