CHLOROPHYTA : Ulotrichales : UlotrichaceaeGREEN ALGAE

Ulothrix implexa (Kützing) Kützing


Description: Unbranched uniseriate filaments to 5 cms or more in length. Attached or unattached.

Habitat: Common, mainly in brackish wate of the upper littoral.

Distribution: Widespread around the coasts of the British Isles. Europe: France, Netherlands, Baltic and Norway.

Similar Species: Other species of Ulothrix, Urospora and Rhizoclonium, the distinction is microscopic.

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

iNaturalist: Ulothrix implexa at iNaturalist World Species Observations database.

WoRMS: Ulothrix implexa at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Ulothrix implexa. (Kützing) Kützing. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZS520. Accessed on 2026-11-01