CHROMOPHYTA : Ectocarpales : ChordariaceaeBROWN ALGAE

Myriactula clandestina (P Crouan et H Crouan) J Feldmann


Description: Thallus endophytic emerging as very small gelatinous cushions tuft-like up to 1 mm in diameter epiphytic on Fucus. Central region consisting of erect closely packed branches.

Habitat: Very rare.

Distribution: Apparently widespread around the British Isles. Europe: France. Greenland.

Similar Species: There are a many similar small algae - all require microscopic examination to identify.

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

iNaturalist: Myriactula clandestina at iNaturalist World Species Observations database.

WoRMS: Myriactula clandestina at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Myriactula clandestina. (P Crouan et H Crouan) J Feldmann. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZR2940. Accessed on 2026-11-01