RHODOPHYTA : Corallinales : CorallinaceaeRED ALGAE

Hydrolithon sargassi (Foslie) Chamberlain


Description: Small encrusting thallus, orbicular to 2 mm in diameter.

Habitat: Epiphytic usually on Halopithys incurvus.

Distribution: Only known fron Hampshire, Dorset and the Channel Islands in the British Islas. Europe: Mediterranean, Atlantic coast of France. Further afield: Japan.

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

iNaturalist: Hydrolithon sargassi at iNaturalist World Species Observations database.

WoRMS: Hydrolithon sargassi at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Hydrolithon sargassi. (Foslie) Chamberlain. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM4200. Accessed on 2026-11-01