CHROMOPHYTA : Scytosiphonales : ScytosiphonaceaeBROWN ALGAE

Symphyocarpus strangulans Rosenvinge


Description: Thallus a very small thin crust up to 5 mm in diameter, firmly attached.

Habitat: Very rare. Epiphytic on Laminaria and maerl also epizoic. Low littoral and sublittoral to 20 m.

Distribution: Known from only a few locations in the British Isles. Europe: Spain, France and Norway. Greenland. Atlantic coast of North America: Canada.

Similar Species: Other small encrusting brown algae.

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

iNaturalist: Symphyocarpus strangulans at iNaturalist World Species Observations database.

WoRMS: Symphyocarpus strangulans at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Symphyocarpus strangulans. Rosenvinge. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZR1780. Accessed on 2026-11-01