Description: Unbranched uniseriate filaments to 12 cms or more in length. Attached becoming curled and twisted

Habitat: Mainly in the upper littoral, also on mud in estuaries and salt-marches.

Distribution: Widely distributed around the British Isles. Europe: France, Netherlands, the Baltic and Norway. Greenland. Atlantic coast of North America: Canada, Maine and New Hampshire. Further afield: South Africa.

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

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

iNaturalist: Ulothrix speciosa at iNaturalist World Species Observations database.

WoRMS: Ulothrix speciosa at World Register of Marine Species. Accepted name: Ulothrix speciosa (Carmichael) Kützing, 1849. AphiaID: 145930.

Classification: Biota; Plantae; Viridiplantae; Chlorophyta; Chlorophytina; Ulvophyceae; Ulotrichales; Ulotrichaceae; Ulothrix