RHODOPHYTA : Corallinales : HapalidiaceaeRED ALGAE

Phymatolithon lamii (Lemoine) Chamberlain


Description: Encrusting coralline spreading to 6 cms in diameter and 4 mm thick, flat with no upright branches. A thick margin without orbital ridges and showing fine delicate watermarks.

Habitat: Quite common. Epilithic and epizoic in low littoral and sublittoral to 90 m.

Distribution: Generally around the British Isles. Europe: Spain to Norway. Atlantic coast of North America: Canada and Massachusetts.

Similar Species: Phymatolithon laevigatum.

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

iNaturalist: Phymatolithon lamii at iNaturalist World Species Observations database.

WoRMS: Phymatolithon lamii at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Phymatolithon lamii. (Lemoine) Chamberlain. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM4510. Accessed on 2026-11-01