RHODOPHYTA : Ceramiales : DelesseriaceaeRED ALGAE

Radicilingua thysanorhizans (Holmes) Papenfuss


Radicilingua thysanorhizans image: radthy
Radicilingua thysanorhizans

Description: Thallus flat with prostrate foliose branches, very thin up to 5 mm wide and up to 5 cms long, overlapping. Veins microscopic.

Habitat: Sublittoral only, as patches on pebbles or rock. Generally on stones or gravel in a depth of 30 m.

Distribution: British Isles, mainly south-western coasts but recorded in Wales and on the north of Ireland and in Scotland. Europe: the Mediterranean, Portugal and Spain.

Similar Species: Acrosorium venulosum.

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

iNaturalist: Radicilingua thysanorhizans at iNaturalist World Species Observations database.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Radicilingua thysanorhizans. (Holmes) Papenfuss. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM10240. Accessed on 2026-11-01