Cosmarium meneghinii var. regnellii (Wille) Playfair, 1913 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium regnellii Name Homonyms Cosmarium meneghinii var. regnellii (Wille) Playfair, 1913