Phylum: Charophyta Family: Closteriaceae
Closterium directum W. Archer 1862
A widespread and common species of peaty pools and moorland bogs, especially with Sphagnum. Particularly common in the north-west of Scotland.
References:
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.