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Cosmarium speciosum var. rostafinskii Desmid Species Outer Hebrides

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Phylum: Charophyta   Family: Desmidiaceae

Cosmarium speciosum var. rostafinskii  (Gutwinski) West & G.S. West

This variety is smaller that the type but is found in similar habitats. The type species is something of a complex with several named varieties. Kouwets (in manuscript) is proposing to synonymise most varieties as natural variation. Var. rostafinskii with be elevated to species level

Kouwets, F.A.C. (in manuscript) European Flora of the Desmid Genus Cosmarium
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 3