Phylum: Charophyta Family: Desmidiaceae
Cosmarium boitierense Kouwets 1998
Only described in 1998, the distribution is largely unknown. Kouwets (1998) gives larger dimensions to this nominate variety but recent Outer Hebridean finds have been of similar size. Named after Étang de la Boitière, Courmemin, France.
References:
Kouwets, F.A.C. (1998) Contributions to the knowledge of the French desmid flora. 2. Rare and remarkable taxa from the regions of Sologne and Brenne.
Coesel, P.F.M. & Meesters, K.J. (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands.