Phylum: Charophyta Family: Desmidiaceae
Actinotaenium diplosporum f. minus (Cushman) Teiling
Differs from the nominate in its smaller size. It would appear to be scarcer. An acidophile of moorland bogs
References:
Coesel, P.F.M. & Meesters, K.J. (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands