RHODOPHYTA : Ceramiales : CallithamniaceaeRED ALGAE

Aglaothamnion bipinnatum (P Crouan et H Crouan) Feldmann-Mazoyer


Description: Very small. Thallus uniseriate, erect and finely branched to 5 - 13 mm long.

Habitat: Epiphytic and epizoic in the sublittoral.

Distribution: West coasts of Scotland and Ireland. Europe: Portugal, Spain, France and the west Baltic.

Similar Species: All species of Aglaothamnion and Callithamnion are similar and not easy to identify.

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

iNaturalist: Aglaothamnion bipinnatum at iNaturalist World Species Observations database.

WoRMS: Aglaothamnion bipinnatum at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Aglaothamnion bipinnatum. (P Crouan et H Crouan) Feldmann-Mazoyer. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM7850. Accessed on 2026-11-01