Phylum: Charophyta   Family: Desmidiaceae

Cosmarium subreinschii Schmidle 1894

A rare species found in mesotrophic, slightly acidic, waters such as moorland pools and loch-margins.

References: 
Kouwets, F.A.C. (in manuscript) European Flora of the Desmid Genus Cosmarium
Coesel, P.F.M. & Meesters, K.J. (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands