Desmidium swamii var. quadrangulatum (Ralfs) J.Roy, 1893 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Desmidium species Desmidium quadrangulatum Name Homonyms Desmidium swamii var. quadrangulatum (Ralfs) J.Roy, 1893