#regnellidium__Regnellidium_diphyllum  small latex-containing aquatic fern of southern Brazil
  supertype:  #aquatic_fern__aquaticfern__water_fern__waterfern  ferns that grow in water
  member of:  #genus_Regnellidium  1 species of aquatic or semi-aquatic fern
     member of:  #family_Marsileaceae__Marsileaceae  clover ferns
        member of:  #class_Filicopsida__Filicopsida__Filicinae__class_Filicinae  ferns
           member of:  #division_Pteridophyta__Pteridophyta  containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
              member of:  #kingdom_Plantae__Plantae__plant_kingdom__plantkingdom  taxonomic kingdom comprising all living or extinct plants

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