Cosmarium tenellum Bréb. ex Comère, 1901 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium tenellum Name Synonyms Cosmarium tenellum Bréb. Homonyms Cosmarium tenellum Bréb. ex Comère, 1901 Cosmarium tenellum Bréb.