#genus_Sargassum  a genus of protoctista
  supertype:  #protoctist_genus  any genus of Protoctista
  member:  #gulfweed
  member of:  #family_Fucaceae__Fucaceae  small family of brown algae: gulfweeds; rockweeds
     member of:  #order_Fucales__Fucales  coextensive with the family Fucaceae
        member of:  #class_Phaeophyceae__Phaeophyceae  brown algae; mostly marine and littoral eukaryotic algae
           member of:  #division_Phaeophyta__Phaeophyta  coextensive with class Phaeophyceae; in some classifications subsumed in the division Heterokontophyta

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