Phylum: Charophyta   Family: Desmidiaceae

Staurodesmus dejectus var. apiculatus (Brébisson) Croasdale

West, West & Carter (1923), as Staurastrum apiculatum, describe it as 'general, but scarce' for Scotland. There is little to suggest this status has changed. Found in circumneutral waters such as loch-margins and pools

References: 
Coesel, P.F.M. & Meesters, K.J. (2013) European Flora of the Desmid Genera Staurastrum and Staurodesmus
John, D.M. & Williamson, D.B. (2009) A Practical Guide to the Desmids of the West of Ireland
West, W., West, G.S. & Carter, N. (1923) A Monograph of the British Desmidiaceae, Volume 5