#Ceratopteris_thalictroides__floating_fern  pantropical aquatic fern
  supertype:  aquatic_fern__aquaticfern__water_fern__waterfern  ferns that grow in water
  member of:  genus_Ceratopteris__Ceratopteris  water ferns
     member of:  family_Parkeriaceae__Parkeriaceae  coextensive with the genus Ceratopteris; sometimes included in family Polypodiaceae
        member of:  order_Filicales__Filicales__Polypodiales__order_Polypodiales  true (leptosporangiate) 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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