RHODOPHYTA : Acrochaetiales : AcrochaetiaceaeRED ALGAE

Acrochaetium seiriolanum (Harvey-Gibson) Hamel, 1927


Description: Very small uniseriate filaments, erect axes rising from prostrate disk to no more than 1 mm high, virtually unbranched.

Habitat: Very rare. Epiphytic on other algae in the lower littoral and upper sublittoral.

Distribution: British Isles: Ireland, England and Wales (Puffin Island, Anglesey). Europe: Faeroes.

Similar Species: All species of Acrochaetium are similar and microscopic examination is required for identification.

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

iNaturalist: Acrochaetium seiriolanum at iNaturalist World Species Observations database.

WoRMS: Acrochaetium seiriolanum at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Acrochaetium seiriolanum. (Harvey-Gibson) Hamel, 1927. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM1430. Accessed on 2026-11-01