Xanthidium quadricornutum J.Roy & Bisset, 1893 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Xanthidium species Xanthidium tetracentrotum Name Homonyms Xanthidium quadricornutum J.Roy & Bisset, 1893