Helminthocladia virescens (Carmichael) Harvey, 1841 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Ectocarpales family Chordariaceae genus Eudesme species Eudesme virescens Name Homonyms Helminthocladia virescens (Carmichael) Harvey, 1841