Cosmarium pseudopyramidatum var. stenonotum Nordst. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium pseudopyramidatum Name Homonyms Cosmarium pseudopyramidatum var. stenonotum Nordst. Cosmarium pseudopyramidatum subsp. stenonotum Nordst., 1876 Cosmarium pseudopyramidatum var. stenonotum (Nordst.) West & G.S.West, 1905