Phylum: Charophyta Family: Closteriaceae
Closterium acutum Brébisson 1848
A locally common species enjoying a range of waters with a wide pH tolerance.
References:
Ralfs, J. (1848) The British Desmidieae.
Brook, A.J. & Williamson, D.B. (2010) A Monograph on some British Desmids.
John, D.M. & Williamson, D.B. (2009) A Practical Guide to the Desmids of the West of Ireland.
Coesel, P.F.M. & Meesters, K.J. (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands.