| CHROMOPHYTA : Ralfsiales : Ralfsiaceae | BROWN ALGAE |
Description: Thallus encrusting and firmly attached to substrate. Confluent specimens to 3 cms or more in diameter.
Habitat: Rare. Epilithic in the lower littoral.
Distribution: Apparently only found in the south east coasts of England and on the east coast of Ireland at Dublin. Europe: France.
Similar Species: All other small brown encrusting algae are similar and require microscopic examination for determination.
Distribution Map from NBN: Pseudolithoderma roscoffense at National Biodiversity Network mapping facility, data for UK.
iNaturalist: Pseudolithoderma roscoffense at iNaturalist World Species Observations database.
WoRMS: Pseudolithoderma roscoffense at World Register of Marine Species.
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| Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Pseudolithoderma roscoffense. Loiseaux. [In] Encyclopedia of Marine Life of Britain and Ireland. https://habitas.org/mbdp/species.php?item=ZR1590. Accessed on 2026-11-01 |