Phylum: Charophyta Family: Desmidiaceae
Cosmarium fontigenum Nordstedt
A species of loch-margins and pools, found in the plankton and marginal vegetation in circumneutral waters. Not particularly common in the Outer Hebrides but more sampling is required
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. (1905) A Monograph of the British Desmidiaceae, Volume 2