Phylum: Charophyta Family: Desmidiaceae
Cosmarium moniliforme var. panduriforme (Heimerl) Schmidle
Regarded as the commonest of the group but, as noted elsewhere, distribution is largely unknown
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
West, W. & West, G.S. (1908) A Monograph of the British Desmidiaceae, Volume 3