RHODOPHYTA : Ceramiales : CeramiaceaeRED ALGAE

Ceramium nodulosum (Lightfoot) Ducluzeau


Description: Thallus in erect tufts to 30 cms long, usually fully corticate.

Habitat: Epiphytic or epilithic in rock pools of the mid to low-littoral and the sublittoral.

Distribution: Generally distributed all around the British Isles. Europe: Netherlands. May be recorded elsewere under the name Ceramium rubrum.

Similar Species: Other corticate species without spines Ceramium: C.echinotum; C.gadiatum; C.secundatum and C. pallidum.

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

iNaturalist: Ceramium nodulosum at iNaturalist World Species Observations database.

WoRMS: Ceramium nodulosum at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Ceramium nodulosum. (Lightfoot) Ducluzeau. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM8230. Accessed on 2026-11-01