Phylum: Charophyta Family: Desmidiaceae
Staurastrum anatinum Cooke & Wills 1881
Infrequently found in the plankton of acidic lochs, especially shallow waters with little vegetation. A variable species.
References:
Coesel, P.F.M. & Meesters, K.J. (2013) European Flora of the Desmid Genera Staurastrum and Staurodesmus
West, W., West, G.S. & Carter, N. (1923) A Monograph of the British Desmidiaceae, Volume 5
John, D.M. & Williamson, D.B. (2009) A Practical Guide to the Desmids of the West of Ireland