Sargassum polyphyllum var. densa Grunow, 1916 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Fucales family Sargassaceae genus Sargassum species Sargassum polyphyllum Name Homonyms Sargassum polyphyllum var. densa Grunow, 1916