Phylum: Charophyta Family: Desmidiaceae
Pleurotaenium coronatum var. fluctuatum West 1892
Differs from the nominate variety by having the undulations travel almost the entire length of the semicells. Found in mesotrophic waters such as peat bogs and moorland pools.
Ružicka, J. (1977) Die Desmidiaceen Mitteleuropas, Volume 1, Part 1.
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.