Phylum: Charophyta   Family: Desmidiaceae

Euastrum insigne Hassall ex Ralfs 1848

A rare desmid of acidic, oligotrophic moorland pools, and Sphagnum bogs. In the Wests' (1905) time it was considered abundant in mountain bogs and with sumerged Sphagnum.

References: 
West, W. & West, G.S. (1905) A Monograph of the British Desmidiaceae, Volume 2.
Ružicka, J. (1977) Die Desmidiaceen Mitteleuropas, Volume 1, Part 1.
John, D.M. & Williamson, D.B. (2009) A Practical Guide to the Desmids of the West of Ireland.
Coesel, P.F.M. & Meesters, K.J. (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands.