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Eukaryota
  Plantae
    Embryophyta
      Polypodiophyta
            Polypodiopsida
                    Polypodiales
                            Pteridaceae
                                     Acrostichum
                                             Acrostichum aureum
                                                   [Acrostichum guineense]
                                                   [Acrostichum inaequale]
                                                   [Chrysodium aureum]
                                     Actiniopteris
                                             Actiniopteris australis
                                             Actiniopteris dimorpha
                                               Actiniopteris dimorpha subsp. dimorpha
                                             Actiniopteris radiata
                                                   [Acropteris radiata]
                                                   [Acrostichum australe]
                                                   [Acrostichum radiatum]
                                                   [Actiniopteris australis var. radiata]
                                                   [Actiniopteris dichotoma]
                                                   [Asplenium polydactylon]
                                                   [Asplenium radiatum]
                                                   [Blechnum radiatum]
                                                   [Pteris dichotoma]
                                                   [Pteris radiata]
                                             Actiniopteris semiflabellata
                                     Adiantopsis
                                     Adiantum
                                             Adiantum aethiopicum
                                             Adiantum capillus-veneris
                                                   [Adiantum africanum]
                                                   [Adiantum capillus-veneris var. kenyense]
                                                   [Adiantum capillus-veneris var. pinnata]
                                                   [Adiantum capillus-veneris var. trifidum]
                                                   [Adiantum capillus]
                                                   [Adiantum coriandrifolium]
                                                   [Adiantum emarginatum]
                                                   [Adiantum fontanum]
                                                   [Adiantum fumarioides]
                                                   [Adiantum marginatum]
                                                   [Adiantum paradiseae]
                                                   [Adiantum pseudocapillus]
                                                   [Adiantum trifidum]
                                             Adiantum caudatum
                                             Adiantum hispidulum
                                               Adiantum hispidulum var. hispidulum
                                                     [Adiantum lobulatum]
                                             Adiantum incisum
                                                   [Adiantum capillus-gorgonis]
                                                   [Adiantum caudatum var. capillus-gorgonis]
                                                   [Adiantum caudatum var. glabripinnatum]
                                                   [Adiantum caudatum var. hirsutum]
                                                   [Adiantum caudatum var. laciniatum]
                                                   [Adiantum radicans]
                                             Adiantum lunulatum
                                                   [Adiantum arcuatum]
                                                   [Adiantum lunatum]
                                                   [Adiantum lunulatum var. fissum]
                                                   [Adiantum lunulatum var. lobatum]
                                                   [Adiantum lunulatum var. pteropus]
                                                   [Adiantum philippense var. lobatum]
                                                   [Adiantum philippense]
                                                   [Pteris lunulata]
                                             Adiantum poiretii
                                                   [Adiantum assimile]
                                                   [Adiantum crenatum]
                                                   [Adiantum poiretii var. sulphureum]
                                                   [Adiantum sulphureum]
                                                   [Adiantum thalictroides]
                                             Adiantum raddianum
                                                   [Adiantum cuneatum]
                                     Allosorus
                                     Anogramma
                                             Anogramma leptophylla
                                                   [Acrostichum leptophyllum]
                                                   [Anogramma caespitosa]
                                                   [Asplenium leptophyllum]
                                                   [Grammitis leptophylla]
                                                   [Gymnogramma leptophylla var. pinnata]
                                                   [Gymnogramma leptophylla]
                                                   [Osmunda leptophylla]
                                                   [Pityrogramma leptophylla]
                                                   [Polypodium leptophyllum]
                                     Cassebeera
                                     Ceratopteris
                                             Ceratopteris cornuta
                                                   [Ceratopteris thalictroides var. cornuta]
                                                   [Pteris cornuta]
                                             Ceratopteris thalictroides
                                     Ceropteris
                                     Cheilanthes
                                             Cheilanthes bergiana
                                                   [Cheilanthes elata]
                                                   [Cheilanthes streetiae]
                                                   [Hypolepis bergiana]
                                                   [Notholaena streetiae]
                                             Cheilanthes botswanae
                                             Cheilanthes buchananii
                                                   [Cheilanthes inaequalis var. buchananii]
                                                   [Notholaena bipinnata]
                                                   [Notholaena buchananii]
                                             Cheilanthes capensis
                                                   [Adiantopsis capensis]
                                                   [Adiantum capense]
                                                   [Cheilanthes praetexta]
                                                   [Hypolepis capensis]
                                             Cheilanthes ceterachoides
                                             Cheilanthes contracta
                                                   [Cheilanthes hirta var. contracta]
                                                   [Pteris contracta]
                                             Cheilanthes deltoidea
                                               Cheilanthes deltoidea subsp. deltoidea
                                                     [Allosorus deltoideus]
                                                     [Doryopteris deltoidea var. laxa]
                                                     [Doryopteris deltoidea]
                                                     [Pellaea deltoidea]
                                               Cheilanthes deltoidea subsp. silicicola
                                             Cheilanthes depauperata
                                             Cheilanthes dinteri
                                             Cheilanthes distans
                                             Cheilanthes dolomiticola
                                                   [Pellaea dolomiticola]
                                             Cheilanthes eckloniana
                                                   [Notholaena eckloniana]
                                                   [Notholaena krebsiana]
                                             Cheilanthes hastata
                                                   [Adiantum auriculatum]
                                                   [Adiantum hastatum]
                                                   [Allosorus auriculatus]
                                                   [Allosorus hastatus]
                                                   [Allosorus lancifolius]
                                                   [Cassebeera auriculata]
                                                   [Cassebeera hastata]
                                                   [Cheilanthes auriculata]
                                                   [Pellaea auriculata]
                                                   [Pellaea hastata var. reticulata]
                                                   [Pellaea hastata]
                                                   [Pellaea lancifolia]
                                                   [Pteris auriculata]
                                                   [Pteris hastata]
                                                   [Pteris varia]
                                             Cheilanthes hirta
                                               Cheilanthes hirta var. brevipilosa
                                                   Cheilanthes hirta f. brevipilosa
                                                   Cheilanthes hirta f. laxa
                                                         [Cheilanthes hirta var. laxa]
                                                   Cheilanthes hirta f. waterbergensis
                                               Cheilanthes hirta var. hirta
                                                     [Adiantum hirtum]
                                                     [Cheilanthes hirta var. intermedia]
                                                     [Notholaena capensis]
                                                     [Notholaena hirta]
                                               Cheilanthes hirta var. hyaloglandulosa
                                                     [Cheilanthes hyaloglandulosa]
                                               Cheilanthes hirta var. inferacampestris
                                               Cheilanthes hirta var. nemorosa
                                             Cheilanthes inaequalis
                                                   [Notholaena inaequalis var. angolensis]
                                                   [Notholaena inaequalis]
                                                   [Notholaena tricholepis]
                                             Cheilanthes induta
                                             Cheilanthes involuta
                                               Cheilanthes involuta var. involuta
                                                     [Allosorus involutus]
                                                     [Cheilanthes cornuta]
                                                     [Pellaea involuta]
                                                     [Pellaea viridis var. involuta]
                                                     [Pteris involuta]
                                               Cheilanthes involuta var. obscura
                                                     [Cheilanthes viridis var. obscura]
                                                     [Pellaea involuta var. obscura]
                                             Cheilanthes kunzei
                                                   [Cheilanthes distans var. profusa]
                                                   [Cheilanthes profusa var. minor]
                                                   [Cheilanthes profusa]
                                                   [Notholaena profusa]
                                             Cheilanthes marlothii
                                                   [Notholaena marlothii]
                                             Cheilanthes multifida
                                               Cheilanthes multifida subsp. lacerata
                                               Cheilanthes multifida subsp. multifida
                                                     [Adiantum globatum]
                                                     [Adiantum multifidum]
                                                     [Cheilanthes bolusii]
                                                     [Cheilanthes multifida var. flexa]
                                                     [Cheilanthes refracta]
                                                     [Polypodium dicksonifolium]
                                             Cheilanthes namaquensis
                                                   [Allosorus namaquensis]
                                                   [Pellaea namaquensis]
                                             Cheilanthes nielsii
                                             Cheilanthes parviloba
                                                   [Adiantum parvilobum]
                                                   [Cheilanthes hirta var. parviloba]
                                             Cheilanthes pentagona
                                             Cheilanthes quadripinnata
                                                   [Allosorus consobrinus]
                                                   [Allosorus quadripinnatus]
                                                   [Cheilanthes atherstonii]
                                                   [Cheilanthes firma]
                                                   [Cheilanthes linearis]
                                                   [Cheilanthes triangula]
                                                   [Pellaea consobrina]
                                                   [Pellaea quadripinnata]
                                                   [Pteridella quadripinnata]
                                                   [Pteris consobrina]
                                                   [Pteris quadripinnata]
                                             Cheilanthes rawsonii
                                                   [Notholaena rawsonii]
                                             Cheilanthes robusta
                                                   [Allosorus robustus]
                                                   [Cryptogramma robusta]
                                                   [Doryopteris robusta]
                                                   [Onychium robustum]
                                                   [Pellaea robusta]
                                             Cheilanthes viridis
                                                   [Pellaea viridis]
                                               Cheilanthes viridis var. glauca
                                                     [Pellaea hastata var. glauca]
                                                     [Pellaea viridis var. glauca]
                                               Cheilanthes viridis var. macrophylla
                                                     [Allosorus hastatus var. macrophylla]
                                                     [Cheilanthes hastata var. macrophylla]
                                                     [Cheilanthes macrophylla]
                                                     [Pellaea hastata var. macrophylla]
                                                     [Pellaea viridis var. macrophylla]
                                               Cheilanthes viridis var. viridis
                                                     [Adiantum viride]
                                                     [Allosorus adiantoides]
                                                     [Cheilanthes hastata var. canonica]
                                                     [Cheilanthes hastata var. stenophylla]
                                                     [Pellaea adiantoides]
                                                     [Pellaea hastata var. minor]
                                                     [Pellaea viridis var. canonica]
                                                     [Pellaea viridis var. incisa]
                                                     [Platyloma adiantoides]
                                                     [Pteridella adiantoides]
                                                     [Pteridella viridis]
                                                     [Pteris adiantoides]
                                                     [Pteris elliptica]
                                                     [Pteris hastata var. minor]
                                                     [Pteris hastifolia]
                                                     [Pteris viridis]
                                     Choristosoria
                                     Chrysodium
                                     Cryptogramma
                                     Doryopteris
                                             Doryopteris concolor
                                                   [Adiantum palmatum]
                                                   [Allosorus concolor]
                                                   [Cheilanthes concolor]
                                                   [Cheilanthes kirkii]
                                                   [Doryopteris concolor var. kirkii]
                                                   [Doryopteris concolor var. nicklesii]
                                                   [Doryopteris kirkii]
                                                   [Doryopteris nicklesii]
                                                   [Pellaea concolor]
                                                   [Pteris concolor]
                                                   [Pteris pohliana]
                                             Doryopteris pilosa
                                               Doryopteris pilosa var. gemmifera
                                     Gymnopteris
                                     Hemionitis
                                     Litobrochia
                                     Notholaena
                                     Onychium
                                     Pellaea
                                             Pellaea boivinii
                                               Pellaea boivinii var. boivinii
                                                     [Allosorus boivinii]
                                                     [Pellaea boivinii f. bipinnata]
                                                     [Pteris boivinii]
                                             Pellaea calomelanos
                                               Pellaea calomelanos var. calomelanos
                                                     [Allosorus calomelanos]
                                                     [Notholaena calomelanos]
                                                     [Platyloma calomelanos]
                                                     [Pteris calomelanos]
                                             Pellaea dura
                                               Pellaea dura var. dura
                                                     [Allosorus durus]
                                                     [Cheilanthes dura]
                                                     [Pellaea burkeana]
                                                     [Pellaea dura var. gigantea]
                                                     [Pellaea dura var. pilosa]
                                                     [Pellaeopsis burkeana]
                                                     [Pteridella dura]
                                                     [Pteris burkeana]
                                                     [Pteris dura]
                                             Pellaea leucomelas
                                                   [Pellaea calomelanos var. leucomelas]
                                                   [Pteridella leucomelas]
                                                   [Pteris leucomelas]
                                             Pellaea pectiniformis
                                                   [Allosorus pectiniformis]
                                                   [Pellaea goudotii var. bipinnata]
                                                   [Pellaea goudotii var. compacta]
                                                   [Pellaea goudotii var. major]
                                                   [Pellaea goudotii]
                                                   [Pteridella pectiniformis]
                                                   [Pteris pectiniformis]
                                             Pellaea pteroides
                                                   [Adiantopsis pteroides]
                                                   [Adiantum pteroides]
                                                   [Cassebeera pteroides]
                                                   [Cheilanthes pteroides]
                                                   [Choristosoria pteroides]
                                                   [Pteris orbiculata]
                                             Pellaea rufa
                                     Pellaeopsis
                                     Pityrogramma
                                             Pityrogramma argentea
                                                   [Anogramma conspersa]
                                                   [Ceropteris argentea]
                                                   [Gymnogramma argentea var. aurea]
                                                   [Gymnogramma argentea var. madagascarica]
                                                   [Gymnogramma argentea]
                                                   [Gymnogramma aurea]
                                                   [Gymnogramma conspersa]
                                                   [Gymnogramma rosea]
                                                   [Gymnogramma thiebautii]
                                                   [Hemionitis argentea]
                                                   [Hemionitis aurea]
                                                   [Pityrogramma aurea]
                                             Pityrogramma calomelanos
                                                   [Gymnogramma calomelanos]
                                               Pityrogramma calomelanos var. aureoflava
                                                     [Gymnogramma calomelanos var. aureoflava]
                                                     [Pityrogramma elongata]
                                     Platyloma
                                     Pteridella
                                     Pteris
                                             Pteris buchananii
                                                   [Pteris subquadripinnata]
                                             Pteris catoptera
                                                   [Pteris abyssinica]
                                                   [Pteris catoptera var. horridula]
                                                   [Pteris kameruniensis]
                                                   [Pteris quadriaurita subsp. abyssinica]
                                                   [Pteris quadriaurita subsp. catoptera]
                                                   [Pteris quadriaurita var. abyssinica]
                                             Pteris cretica
                                                   [Pteris cretica var. alternata]
                                                   [Pteris cretica var. balansae]
                                                   [Pteris cretica var. plurilobata]
                                                   [Pteris lomarioides]
                                                   [Pteris nervosa]
                                                   [Pteris pentaphylla]
                                                   [Pteris serraria]
                                                   [Pteris treacheriana]
                                                   [Pteris triphylla]
                                             Pteris dentata
                                                   [Asplenium adscensionis]
                                                   [Lonchitis adscensionis]
                                                   [Pteris arguta f. mayor]
                                                   [Pteris arguta f. minor]
                                                   [Pteris arguta var. flabellata]
                                                   [Pteris arguta var. minor]
                                                   [Pteris arguta var. typica]
                                                   [Pteris arguta]
                                                   [Pteris ascensionensis]
                                                   [Pteris cordemoyi]
                                                   [Pteris dentata subsp. flabellata]
                                                   [Pteris dentata var. oligodyctya]
                                                   [Pteris elegans]
                                                   [Pteris flabellata var. ascensionis]
                                                   [Pteris flabellata]
                                                   [Pteris oligodictyon]
                                                   [Pteris semiserrata]
                                                   [Pteris serrulata]
                                                   [Pteris straminea]
                                             Pteris friesii
                                                   [Pteris abrahamii]
                                                   [Pteris angolensis]
                                                   [Pteris catoptera var. friesii]
                                                   [Pteris hildebrandtii]
                                                   [Pteris mohasiensis]
                                                   [Pteris quadriaurita subsp. friesii]
                                                   [Pteris stolzii]
                                             Pteris quadriaurita
                                             Pteris tremula
                                             Pteris vittata
                                                   [Pteris costata]
                                                   [Pteris diversifolia]
                                                   [Pteris ensifolia]
                                                   [Pteris inaequilateralis]
                                                   [Pteris lanceolata]
                                                   [Pteris longifolia]
                                                   [Pteris microdonta]
                                                   [Pycnodoria vittata]
                                     Pycnodoria
                                     Vittaria
                                             Vittaria isoetifolia
                                                   [Oetosis isoetifolia]
                                                   [Vittaria gueinzii]
                                                   [Vittaria longidentata]
                                                   [Vittaria sarmentosa]
                                                   [Vittaria tenera]