Xanthidium cristatum var. uncinatum Bréb. ex Ralfs, 1848 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Xanthidium species Xanthidium cristatum Name Homonyms Xanthidium cristatum var. uncinatum Brebisson Xanthidium cristatum var. uncinatum Bréb. ex Ralfs, 1848