Cosmarium pseudopyramidatum subsp. maximum Børgesen, 1899 Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium pseudopyramidatum Name Homonyms Cosmarium pseudopyramidatum var. maximum Börgesen Cosmarium pseudopyramidatum var. maximum (Børgesen) G.W.Prescott, H.T.Croasdale, W.C.Vinyard & C.E.Bicudo, 1981 Cosmarium pseudopyramidatum subsp. maximum Børgesen, 1899