RHODOPHYTA : Ceramiales : RhodomelaceaeRED ALGAE

Osmundea hybrida (A.P.de Candolle) K.W.Nam, 1994


Description: Thallus cylindrical and erect to 8.5 cms long, first order branches cylindrical or slightly compressed, further branches terete. Axes with circular terminal depression.

Habitat: Epilithic in rock pools of mid-littoral to lower littoral but not sublittoral, often mixed with Osmundea pinnatifida.

Distribution: Generally distributed around the British Isles including the Shetlands and Channel Islands. Europe: Portugal, Spain, Netherlands. Further afield: Canary Islands and Sri Lanka. Records from elsewhere require confirmation, may be based on species of Laurencia.

Similar Species: Chondria dasyphylla and other members of the genus.

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

iNaturalist: Osmundea hybrida at iNaturalist World Species Observations database.

WoRMS: Osmundea hybrida at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Osmundea hybrida. (A.P.de Candolle) K.W.Nam, 1994. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM10780. Accessed on 2026-11-01