Phylum: Charophyta   Family: Closteriaceae

Closterium moniliferum Ehrenberg ex Ralfs 1848

A common and widespread species which favours circumneutral waters, but tolerant of more acidic conditions. Also found in ephemeral pools and winter flooded areas.

References: 
Brook, A.J. & Williamson, D.B. (2010) A Monograph on some British Desmids.
Coesel, P.F.M. & Meesters, K.J. (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands.
Prescott, W.G., et al. (2001 reprint) A Synopsis of North American Desmids. Part II, Desmidiaceae: Placodermae, Section 1.
Ruzicka, J. (1977) Die Desmidiaceen Mitteleuropas, Volume 1, Part 1.