Phylum: Charophyta   Family: Desmidiaceae

Micrasterias truncata var. bahusiensis  Wittrock

Differs from the nominate in having the apical and upper lateral lobes with a wide open incision. Found in similar habitats to the nominate but quite rare

References: 
Coesel, P.F.M. & Meesters, K.J. (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands
Carter, C.F. & Williamson, D.B. (2018) A contribution to the desmid (Charophyta, Conjugatophyta) flora of Newfoundland
West, W. & West, G.S. (1905) A Monograph of the British Desmidiaceae, Volume 2