Cosmarium circulare Reinsch (nom. illeg.)
Reference: Reinsch 1867
Reference: Reinsch 1867
Remarks: The flattened cells resembles Cosmarium circulare Reinsch, the more elevated cells that of Cosmarium lundellii f. minor Messikommer (in: Messikommer 1927). Obviously they are the same taxon. Unfortunately Cosmarium circulare is an illegitimate homonym of Cosmarium circulare (Hassall ex Ralfs) Kützing, so this species must be renamed.
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