Holacanthum aculeatum (Ehrenberg ex Ralfs) Wille, 1890 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Xanthidium species Xanthidium aculeatum Name Homonyms Holacanthum aculeatum (Ehrenberg ex Ralfs) Wille, 1890