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Organism
  Plantae
   Viridiplantae
     Streptophyta
     Embryophyta
      Tracheophyta
        Polypodiophytina
            Polypodiopsida
                   [Arthropsida]
                   [Equisetopsida]
                   [Eusporangiopsida]
                   [Filicopsida]
                   [Marattiopsida]
                   [Psilopsida]
                   [Psilotopsida]
              Polypodiidae
                     [Dennstaedtiidae]
                     [Leptosporangiopsida]
                     [Marsileidae]
                     [Plagiogyriidae]
                     [Pterididae]
                    Polypodiales
                           [Aspleniales]
                           [Athyriales]
                           [Blechnales]
                           [Dennstaedtiales]
                           [Dryopteridales]
                           [Filicales]
                           [Lindsaeales]
                           [Negripteridales]
                           [Parkeriales]
                           [Platyzomatales]
                           [Pteridales]
                           [Thelypteridales]
                            Onocleaceae
                                     Calypterium
                                             Calypterium sensibile
                                     Matteuccia
                                             Matteuccia cavaleriana
                                             Matteuccia hintonii
                                             Matteuccia intermedia
                                             Matteuccia japonica
                                             Matteuccia nodulosa
                                             Matteuccia orientalis
                                                   Matteuccia orientalis f. monstra
                                             Matteuccia pensylvanica
                                                   Matteuccia pensylvanica f. obtusilobata
                                                   Matteuccia pensylvanica f. pubescens
                                             Matteuccia pubescens
                                             Matteuccia struthiopteris
                                                   [Onoclea struthiopteris]
                                                   [Pteretis nodulosa]
                                                   Matteuccia struthiopteris f. pubescens
                                               Matteuccia struthiopteris subsp. pensylvanica
                                               Matteuccia struthiopteris subsp. sinuata
                                               Matteuccia struthiopteris subsp. struthiopteris
                                               Matteuccia struthiopteris var. acutiloba
                                               Matteuccia struthiopteris var. pensylvanica
                                                     [Matteuccia struthiopteris var. pubescens]
                                                     [Onoclea struthiopteris var. pensylvanica]
                                               Matteuccia struthiopteris var. struthiopteris
                                     Onoclea
                                             Onoclea asiatica
                                             Onoclea attenuata
                                             Onoclea augescens
                                             Onoclea boryana
                                             Onoclea capensis
                                             Onoclea crispa
                                             Onoclea discolor
                                             Onoclea hintonii
                                             Onoclea intermedia
                                             Onoclea interrupta
                                             Onoclea lineata
                                             Onoclea nodulosa
                                             Onoclea nuda
                                             Onoclea obtusiloba
                                             Onoclea orientalis
                                                   [Pentarhizidium orientale]
                                             Onoclea pensylvanica
                                             Onoclea polypodioides
                                             Onoclea procera
                                             Onoclea quercifolia
                                             Onoclea scandens
                                             Onoclea sensibilis
                                                   Onoclea sensibilis f. acutisegmenta
                                                   Onoclea sensibilis f. ventroperaferens
                                               Onoclea sensibilis var. interrupta
                                               Onoclea sensibilis var. obtusilobata
                                               Onoclea sensibilis var. sensibilis
                                             Onoclea sorbifolia
                                             Onoclea spicant
                                             Onoclea spicata
                                             Onoclea striata
                                             Onoclea variabilis
                                     Onocleopsis
                                             Onocleopsis hintonii
                                     Pentarhizidium
                                             Pentarhizidium intermedium
                                             Pentarhizidium japonicum
                                     Pteretis
                                             Pteretis intermedia
                                             Pteretis japonica
                                             Pteretis orientalis
                                             Pteretis pensylvanica
                                             Pteretis struthiopteris
                                     Pterinodes
                                             Pterinodes orientalis
                                             Pterinodes sensibile
                                             Pterinodes struthiopteris
                                     Ragiopteris
                                             Ragiopteris obtusiloba
                                             Ragiopteris onocleoides

Problematic Rooting (199469)
                                                   Onoclea struthiopteris f. foliacea
                                                   Onoclea struthiopteris f. obtusilobata
                                                   Onoclea struthiopteris f. pubescens

Problematic Rooting (199753)
                                               Pteretis nodulosa var. pubescens