Phylum: Cyanobacteria   Family: Microchaetaceae

Tolypothrix distorta Kützing ex Bornet & Flahault, 1886

Free-floating or attached, often with submerged vegetation. Found in lochs and slow-moving water. Rarely recorded

References: 
John, D.M., Whitton, B.A. & Brook, A.J. (2011) - The Freshwater Algal Flora of the British Isles