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Organism
  Plantae
      Tracheophyta
             [Equisetophyta]
             [Pteridophyta]
        Polypodiophytina
            Polypodiopsida
                   [Cyatheopsida]
                   [Equisetopsida]
                   [Filicopsida]
                   [Gleicheniopsida]
                   [Hymenophyllopsida]
                   [Marattiopsida]
                   [Marsileopsida]
                   [Matoniopsida]
                   [Osmundopsida]
                   [Psilotopsida]
                   [Pteridopsida]
                   [Salviniopsida]
                   [Sphenopsida]
              Polypodiidae
                     [Dennstaedtiidae]
                     [Marsileidae]
                     [Plagiogyriidae]
                     [Pterididae]
                    Polypodiales
                           [Aspleniales]
                           [Athyriales]
                           [Blechnales]
                           [Dennstaedtiales]
                           [Filicales]
                           [Lindsaeales]
                           [Lonchitidales]
                           [Monachosorales]
                           [Negripteridales]
                           [Parkeriales]
                           [Platyzomatales]
                           [Pteridales]
                           [Saccolomatales]
                           [Thelypteridales]
                      Aspleniineae
                            Rhachidosoraceae
                                   [Rhachidosoroideae]
                                     Rhachidosorus
                                             Rhachidosorus blotianus
                                                   [Athyrium fragile]
                                             Rhachidosorus chrysocarpus
                                                   [Diplazium chrysocarpum]
                                             Rhachidosorus consimilis
                                             Rhachidosorus mesosorus
                                                   [Asplenium mesosorum]
                                                   [Athyrium mesosorum]
                                                   [Diplazium mesosorum]
                                             Rhachidosorus pulcher
                                                   [Diplazium pulchrum]
                                             Rhachidosorus siamensis
                                             Rhachidosorus stramineus
                                                   [Athyrium stramineum]
                                             Rhachidosorus truncatus
                                                   [Rhachidosorus subfragilis]