#genus_Ceterach__Ceterach  small genus of Old World ferns; superseded in some classification systems which place plants of this genus in e.g. genera Asplenium and Pleurosorus
  supertype:  #fern_genus  genera of ferns and fern allies
  member of:  #family_Polypodiaceae__Polypodiaceae  ferns: a large family that in some classification systems has been subdivided into several families (including Aspleniaceae and Blechnaceae and Davalliaceae and Dennstaedtiaceae and Dryopteridaceae and Oleandraceae and Pteridaceae)
     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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