Sargassum swartzii C.Agardh, 1820 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Fucales family Sargassaceae genus Sargassum species Sargassum swartzii Name Synonyms Fucus swartzii Turner, 1811 Sargassum acutifolium Grev., 1849 Sargassum spathulifolium J.Agardh, 1848 Sargassum wightii Grev. Sargassum wightii Grev. ex J.Agardh, 1848 Homonyms Sargassum swartzii C.Agardh, 1820