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Organism
  Plantae
      Tracheophyta
            Polypodiopsida
                    Polypodiales
                            Pteridaceae
                                     Acrostichum
                                             Acrostichum aureum
                                             Acrostichum danaeifolium
                                                   [Acrostichum excelsum]
                                     Adiantopsis
                                             Adiantopsis paupercula
                                                   [Cheilanthes paupercula]
                                     Adiantum
                                             Adiantum aleuticum
                                                   [Adiantum pedatum var. aleuticum]
                                                   [Adiantum pedatum var. subpumilum]
                                             Adiantum anceps
                                             Adiantum braunii
                                             Adiantum capillus-veneris
                                                   [Adiantum capillus-veneris var. modestum]
                                                   [Adiantum capillus-veneris var. protrusum]
                                                   [Adiantum modestum]
                                             Adiantum caudatum
                                             Adiantum concinnum
                                             Adiantum fragile
                                               Adiantum fragile var. fragile
                                               Adiantum fragile var. rigidulum
                                                     [Adiantum rigidulum]
                                             Adiantum hispidulum
                                             Adiantum jordanii
                                             Adiantum latifolium
                                             Adiantum macrophyllum
                                             Adiantum melanoleucum
                                             Adiantum obliquum
                                             Adiantum pedatum
                                               Adiantum pedatum subsp. aleuticum
                                               Adiantum pedatum subsp. calderi
                                               Adiantum pedatum subsp. subpumilum
                                                     [Adiantum pedatum var. subpumilum]
                                             Adiantum petiolatum
                                             Adiantum pulverulentum
                                             Adiantum pyramidale
                                                   [Adiantum cristatum]
                                             Adiantum raddianum
                                                   [Adiantum cuneatum]
                                             Adiantum tenerum
                                             Adiantum tetraphyllum
                                             Adiantum tracyi
                                             Adiantum trapeziforme
                                             Adiantum tricholepis
                                             Adiantum villosum
                                             Adiantum viridimontanum
                                             Adiantum vivesii
                                             Adiantum wilsonii
                                     Adicea
                                     Adipera
                                     Aleuritopteris
                                             Aleuritopteris anceps
                                                   [Cheilanthes candida]
                                             Aleuritopteris dealbata
                                                   [Cheilanthes dealbata]
                                     Ananthacorus
                                             Ananthacorus angustifolius
                                                   [Vittaria costata]
                                     Anetium
                                     Anopteris
                                     Anotites
                                     Antrophyum
                                     Argyrochosma
                                             Argyrochosma dealbata
                                                   [Cheilanthes dealbata]
                                                   [Notholaena dealbata]
                                                   [Pellaea dealbata]
                                             Argyrochosma fendleri
                                                   [Cheilanthes cancellata]
                                                   [Notholaena fendleri]
                                                   [Pellaea fendleri]
                                             Argyrochosma incana
                                                   [Notholaena incana]
                                             Argyrochosma jonesii
                                                   [Notholaena jonesii]
                                                   [Pellaea jonesii]
                                             Argyrochosma limitanea
                                               Argyrochosma limitanea subsp. limitanea
                                                     [Cheilanthes limitanea]
                                                     [Notholaena limitanea]
                                                     [Pellaea limitanea]
                                               Argyrochosma limitanea subsp. mexicana
                                                     [Cheilanthes limitanea var. mexicana]
                                                     [Notholaena limitanea subsp. mexicana]
                                                     [Notholaena limitanea var. mexicana]
                                                     [Pellaea limitanea var. mexicana]
                                             Argyrochosma microphylla
                                                   [Cheilanthes parvifolia]
                                                   [Notholaena parvifolia]
                                                   [Pellaea microphylla]
                                     Aspidotis
                                             Aspidotis californica
                                                   [Cheilanthes californica]
                                             Aspidotis carlotta-halliae
                                                   [Cheilanthes carlotta-halliae]
                                             Aspidotis densa
                                                   [Cheilanthes siliquosa]
                                                   [Cryptogramma densa]
                                                   [Onychium densum]
                                                   [Pellaea densa]
                                     Astrolepis
                                             Astrolepis cochisensis
                                               Astrolepis cochisensis subsp. arizonica
                                               Astrolepis cochisensis subsp. chihuahuaensis
                                               Astrolepis cochisensis subsp. cochisensis
                                                     [Cheilanthes cochisensis]
                                                     [Cheilanthes sinuata var. cochisensis]
                                                     [Notholaena cochisensis]
                                                     [Notholaena sinuata var. cochisensis]
                                             Astrolepis integerrima
                                                   [Cheilanthes integerrima]
                                                   [Notholaena integerrima]
                                                   [Notholaena sinuata var. integerrima]
                                             Astrolepis sinuata
                                                   [Astrolepis sinuata subsp. mexicana]
                                                   [Cheilanthes sinuata]
                                               Astrolepis sinuata subsp. sinuata
                                                     [Cheilanthes sinuata]
                                                     [Notholaena sinuata]
                                             Astrolepis windhamii
                                     Atenia
                                     Bommeria
                                             Bommeria hispida
                                                   [Gymnopteris hispida]
                                     Ceratopteris
                                             Ceratopteris pteridoides
                                             Ceratopteris richardii
                                                   [Ceratopteris deltoidea]
                                             Ceratopteris thalictroides
                                                   [Ceratopteris deltoidea]
                                                   [Ceratopteris siliquosa]
                                               Ceratopteris thalictroides subsp. thalictroides
                                                     [Ceratopteris siliquosa]
                                     Cheilanthes
                                             Cheilanthes fibrillosa
                                             Cheilanthes jonesii
                                             Cheilanthes lanosa
                                                   [Cheilanthes vestita]
                                             Cheilanthes leucopoda
                                             Cheilanthes parishii
                                     Cheilocostus
                                     Cheiranthus
                                     Cheirinia
                                     Coniogramme
                                             Coniogramme pilosa
                                     Cryptogramma
                                             Cryptogramma acrostichoides
                                                   [Cryptogramma crispa subsp. acrostichoides]
                                             Cryptogramma cascadensis
                                             Cryptogramma crispa
                                             Cryptogramma sitchensis
                                                   [Cryptogramma crispa var. sitchensis]
                                             Cryptogramma stelleri
                                     Doryopteris
                                             Doryopteris angelica
                                             Doryopteris decipiens
                                                   [Cheilanthes decipiens]
                                                   [Doryopteris decora var. decipiens]
                                             Doryopteris decora
                                                   [Cheilanthes decora]
                                             Doryopteris pedata
                                             Doryopteris subdecipiens
                                             Doryopteris takeuchii
                                                   [Cheilanthes takeuchii]
                                     Eriosorus
                                     Gaga
                                             Gaga arizonica
                                                   [Cheilanthes arizonica]
                                                   [Cheilanthes pyramidalis var. arizonica]
                                             Gaga kaulfussii
                                                   [Cheilanthes kaulfussii]
                                     Haplopteris
                                             Haplopteris anguste-elongata
                                             Haplopteris elongata
                                                   [Vittaria elongata]
                                                   [Vittaria rigida]
                                     Hecistopteris
                                             Hecistopteris pumila
                                     Hemionitis
                                             Hemionitis palmata
                                     Hemitelia
                                     Jamesonia
                                             Jamesonia aureonitens
                                             Jamesonia hispidula
                                                   [Eriosorus hispidulus]
                                                   [Psilogramme portoricensis]
                                     Myriopteris
                                             Myriopteris aemula
                                                   [Cheilanthes aemula]
                                             Myriopteris alabamensis
                                                   [Cheilanthes alabamensis]
                                                   [Pellaea alabamensis]
                                             Myriopteris aurea
                                                   [Cheilanthes bonariensis]
                                                   [Notholaena aurea]
                                             Myriopteris clevelandii
                                                   [Cheilanthes clevelandii]
                                             Myriopteris cooperae
                                                   [Cheilanthes cooperae]
                                             Myriopteris covillei
                                                   [Cheilanthes covillei]
                                             Myriopteris fendleri
                                                   [Cheilanthes fendleri]
                                             Myriopteris gracilis
                                                   [Cheilanthes feei]
                                             Myriopteris gracillima
                                                   [Cheilanthes gracillima var. aberrans]
                                                   [Cheilanthes gracillima]
                                             Myriopteris intertexta
                                                   [Cheilanthes intertexta]
                                             Myriopteris lanosa
                                                   [Cheilanthes vestita]
                                             Myriopteris lendigera
                                                   [Cheilanthes lendigera]
                                             Myriopteris lindheimeri
                                                   [Cheilanthes lindheimeri]
                                             Myriopteris microphylla
                                                   [Cheilanthes microphylla]
                                             Myriopteris newberryi
                                                   [Cheilanthes newberryi]
                                                   [Notholaena newberryi]
                                             Myriopteris notholaenoides
                                                   [Cheilanthes notholaenoides]
                                             Myriopteris parryi
                                                   [Cheilanthes parryi]
                                                   [Notholaena parryi]
                                             Myriopteris pringlei
                                               Myriopteris pringlei subsp. pringlei
                                                     [Cheilanthes pringlei]
                                             Myriopteris rufa
                                                   [Cheilanthes castanea]
                                                   [Cheilanthes eatonii]
                                             Myriopteris scabra
                                                   [Cheilanthes horridula]
                                             Myriopteris tomentosa
                                                   [Cheilanthes tomentosa]
                                             Myriopteris viscida
                                                   [Cheilanthes viscida]
                                             Myriopteris windhamii
                                                   [Cheilanthes villosa]
                                             Myriopteris wootonii
                                                   [Cheilanthes wootonii]
                                             Myriopteris wrightii
                                                   [Cheilanthes wrightii]
                                             Myriopteris yavapensis
                                                   [Cheilanthes yavapensis]
                                     Notholaena
                                             Notholaena aliena
                                                   [Cheilanthes aliena]
                                             Notholaena aschenborniana
                                                   [Cheilanthes aschenborniana]
                                             Notholaena californica
                                               Notholaena californica subsp. californica
                                                     [Aleuritopteris cretacea subsp. nigrescens]
                                                     [Aleuritopteris cretacea]
                                                     [Cheilanthes deserti]
                                                     [Notholaena californica subsp. nigrescens]
                                                     [Notholaena candida var. accessita]
                                               Notholaena californica subsp. leucophylla
                                             Notholaena candida
                                               Notholaena candida var. copelandii
                                                     [Cheilanthes candida var. copelandii]
                                                     [Notholaena copelandii]
                                             Notholaena grayi
                                               Notholaena grayi subsp. grayi
                                                     [Cheilanthes grayi]
                                               Notholaena grayi subsp. sonorensis
                                             Notholaena greggii
                                                   [Cheilanthes greggii]
                                             Notholaena lemmonii
                                                   [Cheilanthes lemmonii]
                                             Notholaena mollis
                                                   [Notholaena sinuata]
                                             Notholaena neglecta
                                                   [Cheilanthes neglecta]
                                             Notholaena schaffneri
                                                   [Cheilanthes nealleyi]
                                                   [Notholaena nealleyi]
                                                   [Notholaena schaffneri var. nealleyi]
                                             Notholaena standleyi
                                                   [Cheilanthes hookeri]
                                                   [Cheilanthes standleyi]
                                             Notholaena trichomanoides
                                                   [Cheilanthes trichomanoides]
                                     Oeosporangium
                                             Oeosporangium viride
                                                   [Cheilanthes viridis]
                                                   [Pellaea viridis]
                                     Onychium
                                     Pellaea
                                             Pellaea andromedifolia
                                                   [Pellaea andromedifolia f. pubescens]
                                                   [Pellaea andromedifolia var. pubescens]
                                                   [Pellaea andromedifolia var. rubens]
                                             Pellaea atropurpurea
                                             Pellaea brachyptera
                                             Pellaea breweri
                                             Pellaea bridgesii
                                             Pellaea cordifolia
                                                   [Pellaea cardiomorpha]
                                                   [Pellaea cordata]
                                                   [Pellaea sagittata var. cordata]
                                             Pellaea gastonyi
                                             Pellaea glabella
                                               Pellaea glabella subsp. glabella
                                                     [Pellaea atropurpurea var. bushii]
                                               Pellaea glabella subsp. missouriensis
                                                     [Pellaea glabella var. missouriensis]
                                               Pellaea glabella subsp. occidentalis
                                                     [Pellaea glabella var. nana]
                                                     [Pellaea glabella var. occidentalis]
                                               Pellaea glabella subsp. simplex
                                                     [Pellaea atropurpurea var. simplex]
                                                     [Pellaea glabella var. simplex]
                                                     [Pellaea occidentalis subsp. simplex]
                                                     [Pellaea suksdorfiana]
                                             Pellaea glaciogena
                                             Pellaea glauca
                                             Pellaea intermedia
                                             Pellaea lyngholmii
                                             Pellaea mucronata
                                               Pellaea mucronata subsp. californica
                                                     [Pellaea compacta]
                                                     [Pellaea mucronata var. californica]
                                               Pellaea mucronata subsp. mucronata
                                                     [Pellaea longimucronata]
                                               Pellaea mucronata var. mucronata
                                             Pellaea occidentalis
                                             Pellaea ovata
                                             Pellaea paradoxa
                                                   [Pellaea cordata]
                                             Pellaea pyramidalis
                                                   [Cheilanthes pyramidalis]
                                             Pellaea sagittata
                                             Pellaea ternifolia
                                               Pellaea ternifolia subsp. arizonica
                                               Pellaea ternifolia subsp. ternifolia
                                             Pellaea truncata
                                                   [Pellaea longimucronata]
                                             Pellaea villosa
                                                   [Pellaea ternifolia subsp. villosa]
                                             Pellaea wrightiana
                                                   [Pellaea ternifolia var. wrightiana]
                                     Pentagramma
                                             Pentagramma maxonii
                                                   [Pentagramma triangularis subsp. maxonii]
                                                   [Pityrogramma triangularis var. maxonii]
                                             Pentagramma pallida
                                                   [Pityrogramma pallida]
                                                   [Pityrogramma triangularis var. pallida]
                                             Pentagramma rebmanii
                                                   [Pentagramma triangularis subsp. rebmanii]
                                             Pentagramma triangularis
                                               Pentagramma triangularis subsp. semipallida
                                                     [Pityrogramma triangularis var. semipallida]
                                                     [Pityrogramma triangularis var. viridis]
                                               Pentagramma triangularis subsp. triangularis
                                                     [Pentagramma triangularis subsp. rebmanii]
                                                     [Pityrogramma semipallida]
                                                     [Pityrogramma triangularis var. semipallida]
                                                     [Pityrogramma triangularis var. viridis]
                                                     [Pityrogramma triangularis]
                                               Pentagramma triangularis subsp. viscosa
                                                     [Pityrogramma triangularis var. viscosa]
                                                     [Pityrogramma viscosa]
                                     Pityrogramma
                                             Pityrogramma calomelanos
                                               Pityrogramma calomelanos var. aureoflava
                                                     [Pityrogramma austroamericana]
                                                     [Pityrogramma calomelanos var. austroamericana]
                                             Pityrogramma chrysophylla
                                               Pityrogramma chrysophylla var. gabrielae
                                               Pityrogramma chrysophylla var. subflexuosa
                                                     [Pityrogramma subflexuosa]
                                             Pityrogramma mackenneyi
                                             Pityrogramma sulphurea
                                             Pityrogramma tartarea
                                                   [Pityrogramma ebenea]
                                             Pityrogramma trifoliata
                                                   [Trismeria trifoliata]
                                     Polytaenium
                                             Polytaenium cajenense
                                                   [Antrophyum cajenense]
                                             Polytaenium citrifolium
                                                   [Anetium citrifolium]
                                             Polytaenium feei
                                             Polytaenium intramarginale
                                                   [Antrophyum intramarginale]
                                                   [Vittaria intramarginalis]
                                             Polytaenium lineatum
                                                   [Antrophyum lineatum]
                                             Polytaenium urbanii
                                                   [Antrophyum urbanii]
                                     Pteris
                                             Pteris altissima
                                             Pteris anopteris
                                                   [Anopteris hexagona subsp. intermedia]
                                             Pteris arborea
                                                   [Pteris crassipes]
                                             Pteris bahamensis
                                                   [Pteris longifolia var. bahamensis]
                                             Pteris biaurita
                                             Pteris cretica
                                               Pteris cretica var. cretica
                                             Pteris deflexa
                                             Pteris delchampsii
                                             Pteris denticulata
                                             Pteris ensiformis
                                                   [Pteris ensiformis var. victoriae]
                                             Pteris gigantea
                                                   [Pteris crassipes]
                                             Pteris grandifolia
                                             Pteris hexagona
                                                   [Anopteris hexagona]
                                                   [Onychium strictum]
                                             Pteris hillebrandii
                                             Pteris irregularis
                                             Pteris lidgatii
                                                   [Schizostege lydgatei]
                                             Pteris longifolia
                                             Pteris lydgatei
                                                   [Schizostege lydgatei]
                                             Pteris multifida
                                                   [Pteris serrulata]
                                             Pteris mutilata
                                             Pteris parkeri
                                                   [Pteris cretica var. albolineata]
                                             Pteris pungens
                                             Pteris quadriaurita
                                                   [Pteris plumula]
                                             Pteris tremula
                                             Pteris tripartita
                                             Pteris vittata
                                     Radiovittaria
                                             Radiovittaria remota
                                                   [Vittaria remota]
                                     Vittaria
                                             Vittaria appalachiana
                                             Vittaria graminifolia
                                                   [Vittaria filifolia]
                                             Vittaria lineata