Rhizoclonium robustum Setchell & N.L.Gardner Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Chlorophyta class Ulvophyceae order Cladophorales family Cladophoraceae genus Rhizoclonium species Rhizoclonium robustum Name Homonyms Rhizoclonium robustum Setchell & N.L.Gardner