Sargassum ilicifolium subsp. duplicatum J.Agardh Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Fucales family Sargassaceae genus Sargassum species Sargassum ilicifolium Name Homonyms Sargassum ilicifolium var. duplicatum J.Agardh, 1848 Sargassum ilicifolium subsp. duplicatum J.Agardh