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. Accepted name: Symphyocarpus strangulans Rosenvinge, 1893. AphiaID: 145870.

Classification: Biota; Chromista; Harosa; Heterokonta; Ochrophyta; Phaeophyceae; Fucophycidae; Ectocarpales; Scytosiphonaceae; Scytosiphoneae; Symphyocarpus