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Organism
  Plantae
      Tracheophyta
             [Equisetophyta]
             [Pteridophyta]
        Polypodiophytina
            Polypodiopsida
                   [Cyatheopsida]
                   [Equisetopsida]
                   [Filicopsida]
                   [Gleicheniopsida]
                   [Hymenophyllopsida]
                   [Marattiopsida]
                   [Marsileopsida]
                   [Matoniopsida]
                   [Osmundopsida]
                   [Psilotopsida]
                   [Pteridopsida]
                   [Salviniopsida]
                   [Sphenopsida]
              Ophioglossidae
                    Ophioglossales
                            Ophioglossaceae
                                   [Botrychiaceae]
                                   [Helminthostachyaceae]
                              Botrychioideae
                                     Botrychium
                                           [Holubiella]
                                             Botrychium acuminatum
                                             Botrychium alaskense
                                               Botrychium alaskense var. pavlovii
                                             Botrychium ascendens
                                             Botrychium boreale
                                                   [Botrychium brevifolium]
                                                   [Botrychium crassinervium]
                                                   [Botrychium lunaria var. boreale]
                                               Botrychium boreale var. boreale
                                             Botrychium campestre
                                             Botrychium crenulatum
                                             Botrychium dusenii
                                                   [Botrychium lunaria var. antarctica]
                                                   [Botrychium lunaria var. dusenii]
                                                   [Botrychium matricariifolium subsp. patagonicum]
                                                   [Botrychium ramosum var. patagonicum]
                                             Botrychium echo
                                             Botrychium furculatum
                                             Botrychium gallicomontanum
                                             Botrychium hesperium
                                                   [Botrychium lunaria subsp. occidentale]
                                                   [Botrychium matricariifolium subsp. hesperium]
                                                   [Botrychium matricariifolium var. hesperium]
                                             Botrychium lanceolatum
                                               Botrychium lanceolatum subsp. angustisegmentum
                                                     [Botrychium angustisegmentum]
                                                     [Botrychium lanceolatum var. angustisegmentum]
                                                     [Botrychium palmatum subsp. angustisegmentum]
                                               Botrychium lanceolatum subsp. lanceolatum
                                                     [Botrychium manshuricum]
                                                     [Botrychium matricariifolium var. lanceolatum]
                                                     [Botrychium palmatum]
                                                     [Botrychium ramosum var. manshuricum]
                                                     [Botrychium ramosum]
                                                     [Botrychium rutaceum var. lanceolatum]
                                                     [Osmunda lanceolata]
                                               Botrychium lanceolatum var. lanceolatum
                                             Botrychium lineare
                                                   [Botrychium campestre var. lineare]
                                             Botrychium lunaria
                                                   [Blechnum racemosum]
                                                   [Botrychium lunaria f. alatum]
                                                   [Botrychium lunaria f. alpina]
                                                   [Botrychium lunaria f. incisum]
                                                   [Botrychium lunaria f. subbipinnatum]
                                                   [Botrychium lunaria f. subincisum]
                                                   [Botrychium lunaria subsp. alpina]
                                                   [Botrychium lunaria var. przevalskii]
                                                   [Botrychium lunaria var. rutaceum]
                                                   [Botrychium lunaria var. tripartitum]
                                                   [Botrychium lunatum]
                                                   [Botrypus lunaria]
                                                   [Ophioglossum pennatum]
                                                   [Osmunda lunaria var. rutacea]
                                                   [Osmunda lunaria]
                                               Botrychium lunaria subsp. lunaria
                                               Botrychium lunaria var. lunaria
                                               Botrychium lunaria var. melzeri
                                             Botrychium matricariifolium
                                                   [Botrychium lunaria subsp. matricariifolium]
                                                   [Botrychium lunaria var. matricariifolium]
                                                   [Botrychium matricariifolium f. gracile]
                                                   [Botrychium matricariifolium f. rhombeum]
                                                   [Botrychium matricariifolium var. rhombeum]
                                                   [Botrychium neglectum f. gracile]
                                                   [Botrychium neglectum]
                                                   [Botrychium ramosum var. neglectum]
                                                   [Botrychium ramosum var. palmatum]
                                                   [Botrychium tenellum]
                                                   [Osmunda lunaria var. ramosa]
                                                   [Osmunda ramosa]
                                                   [Osmunda rutacea]
                                               Botrychium matricariifolium subsp. matricariifolium
                                             Botrychium michiganense
                                             Botrychium minganense
                                                   [Botrychium lunaria f. minganense]
                                                   [Botrychium lunaria subsp. minganense]
                                                   [Botrychium lunaria var. minganense]
                                             Botrychium montanum
                                             Botrychium mormo
                                             Botrychium neolunaria
                                                   [Botrychium lunaria f. onondagense]
                                                   [Botrychium lunaria var. onondagense]
                                                   [Botrychium onondagense]
                                             Botrychium nordicum
                                             Botrychium pallidum
                                             Botrychium paradoxum
                                             Botrychium parvifolium
                                             Botrychium pedunculosum
                                             Botrychium pinnatum
                                                   [Botrychium boreale subsp. obtusilobum]
                                                   [Botrychium boreale var. obtusilobum]
                                                   [Botrychium crassinervium var. obtusilobum]
                                             Botrychium pseudopinnatum
                                             Botrychium pumicola
                                             Botrychium simplex
                                               Botrychium simplex subsp. kannenbergii
                                                     [Botrychium kannenbergii]
                                                     [Botrychium reuteri]
                                               Botrychium simplex subsp. simplex
                                                     [Botrychium kannenbergii f. compositum]
                                                     [Botrychium lunaria var. cordatum]
                                                     [Botrychium lunaria var. simplex]
                                                     [Botrychium matricariifolium var. tenebrosum]
                                                     [Botrychium simplex f. laxifolium]
                                                     [Botrychium simplex var. compositum]
                                                     [Botrychium simplex var. cordatum]
                                                     [Botrychium simplex var. laxifolium]
                                                     [Botrychium simplex var. tenebrosum]
                                                     [Botrychium tenebrosum]
                                                     [Botrychium virginianum var. simplex]
                                               Botrychium simplex var. simplex
                                             Botrychium socorrense
                                             Botrychium spathulatum
                                             Botrychium tolucaense
                                             Botrychium tunux
                                             Botrychium x watertonense
                                             Botrychium yaaxudakeit
                                     Botrypus
                                           [Osmundopteris]
                                             Botrypus chamaeconium
                                                   [Botrychium chamaeconium]
                                                   [Japanobotrychum chamaeconium]
                                                   [Osmundopteris chamaeconia]
                                             Botrypus strictus
                                                   [Botrychium strictum]
                                                   [Japanobotrychum strictum]
                                                   [Osmundopteris stricta]
                                             Botrypus virginianus
                                                   [Botrychium virginianus]
                                               Botrypus virginianus subsp. europaeus
                                                     [Botrychium charcoviense]
                                                     [Botrychium virginianum f. europaeum]
                                                     [Botrychium virginianum subsp. europaeum]
                                                     [Botrychium virginianum var. europaeum]
                                                     [Botrychium virginianus subsp. europaeus]
                                               Botrypus virginianus subsp. virginianus
                                                     [Botrychium anthemoides]
                                                     [Botrychium brachystachys]
                                                     [Botrychium cicutarium]
                                                     [Botrychium dichronum]
                                                     [Botrychium gracile]
                                                     [Botrychium virginianum f. gracile]
                                                     [Botrychium virginianum f. intermedium]
                                                     [Botrychium virginianum f. laurentianum]
                                                     [Botrychium virginianum subsp. meridionale]
                                                     [Botrychium virginianum subsp. virginianum]
                                                     [Botrychium virginianum var. cicutarium]
                                                     [Botrychium virginianum var. dichronum]
                                                     [Botrychium virginianum var. intermedium]
                                                     [Botrychium virginianum var. laurentianum]
                                                     [Botrychium virginianum var. meridionale]
                                                     [Botrychium virginianum var. mexicanum]
                                                     [Botrychium virginianum var. virginianum]
                                                     [Botrychium virginianum]
                                                     [Botrypus cicutaria]
                                                     [Japanobotrychum cicutarium]
                                                     [Japanobotrychum virginianum]
                                                     [Osmunda cicutaria]
                                                     [Osmunda virginiana]
                                                     [Osmundopteris cicutaria]
                                                     [Osmundopteris virginiana]
                                     Japanobotrychum
                                             Japanobotrychum lanuginosum
                                                   [Botrychium arisanense]
                                                   [Botrychium decurrens]
                                                   [Botrychium lanuginosum var. lanuginosum]
                                                   [Botrychium lanuginosum var. leptostachyum]
                                                   [Botrychium lanuginosum var. nanum]
                                                   [Botrychium lanuginosum var. nepalense]
                                                   [Botrychium lanuginosum]
                                                   [Botrychium leptostachyum]
                                                   [Botrychium modestum]
                                                   [Botrychium parvum]
                                                   [Botrychium virginianum var. lanuginosum]
                                                   [Botrychium yunnanense]
                                                   [Botrypus decurrens]
                                                   [Botrypus lanuginosus subsp. leptostachys]
                                                   [Botrypus lanuginosus var. nepalensis]
                                                   [Botrypus lanuginosus]
                                                   [Botrypus parvus]
                                                   [Botrypus tibeticus]
                                                   [Botrypus yunnanensis]
                                                   [Japanobotrychum arisanense]
                                                   [Japanobotrychum lanuginosum var. nepalense]
                                                   [Osmundopteris lanuginosa]
                                               Japanobotrychum lanuginosum var. lanuginosum
                                     Sahashia
                                             Sahashia stricta
                                     Sceptridium
                                             Sceptridium argutum
                                                   [Botrychium argutum]
                                             Sceptridium atrovirens
                                                   [Botrychium atrovirens]
                                                   [Sceptridium japonicum var. atrovirens]
                                             Sceptridium australe
                                               Sceptridium australe subsp. australe
                                                     [Botrychium australe var. erosum]
                                                     [Botrychium australe]
                                                     [Botrychium erosum]
                                                     [Botrychium millefolium]
                                                     [Botrychium ternatum var. australe]
                                                     [Botrychium ternatum var. erosum]
                                               Sceptridium australe subsp. negeri
                                                     [Botrychium australe subsp. negeri]
                                                     [Botrychium negeri]
                                                     [Sceptridium negeri]
                                             Sceptridium biforme
                                                   [Botrychium australe var. millefolium]
                                                   [Botrychium biforme]
                                             Sceptridium biternatum
                                                   [Botrychium biternatum]
                                                   [Botrychium dissectum var. tenuifolium]
                                                   [Botrychium fumariae]
                                                   [Botrychium fumarianum]
                                                   [Botrychium fumarioides]
                                                   [Botrychium obliquum var. tenuifolium]
                                                   [Botrychium tenuifolium]
                                                   [Botrychium ternatum f. tenuifolium]
                                                   [Botrychium ternatum var. daedaleum]
                                                   [Osmunda biternata]
                                                   [Sceptridium tenuifolium]
                                                   [Sceptridium ternatum var. tenuifolium]
                                             Sceptridium daucifolium
                                                   [Botrychium daucifolium]
                                                   [Botrychium officinale]
                                                   [Botrychium parvifolium var. parvum]
                                                   [Botrychium subcarnosum]
                                                   [Sceptridium daucifolium var. intermedium]
                                                   [Sceptridium daucifolium var. kanaii]
                                                   [Sceptridium officinale]
                                             Sceptridium decompositum
                                                   [Botrychium decompositum]
                                                   [Botrychium dissectum subsp. decompositum]
                                             Sceptridium dissectum
                                                   [Botrychium cuneatum]
                                                   [Botrychium dissectum f. confusum]
                                                   [Botrychium dissectum f. dissectum]
                                                   [Botrychium dissectum f. elongatum]
                                                   [Botrychium dissectum f. obliquum]
                                                   [Botrychium dissectum f. oblongifolium]
                                                   [Botrychium dissectum var. dissectum]
                                                   [Botrychium dissectum var. elongatum]
                                                   [Botrychium dissectum var. obliquum]
                                                   [Botrychium dissectum]
                                                   [Botrychium fumarioides var. dissectum]
                                                   [Botrychium lunarioides var. dissectum]
                                                   [Botrychium lunarioides var. obliquum]
                                                   [Botrychium obliquum f. confusum]
                                                   [Botrychium obliquum f. dissectum]
                                                   [Botrychium obliquum f. elongatum]
                                                   [Botrychium obliquum f. oblongifolium]
                                                   [Botrychium obliquum f. pennsylvanicum]
                                                   [Botrychium obliquum var. dissectum]
                                                   [Botrychium obliquum var. elongatum]
                                                   [Botrychium obliquum var. oblongifolium]
                                                   [Botrychium obliquum var. pennsylvanicum]
                                                   [Botrychium obliquum]
                                                   [Botrychium ternatum f. dissectum]
                                                   [Botrychium ternatum var. dissectum]
                                                   [Botrychium ternatum var. obliquum]
                                                   [Osmunda dissecta]
                                                   [Osmunda obliqua]
                                                   [Sceptridium dissectum var. obliquum]
                                                   [Sceptridium obliquum var. elongatum]
                                                   [Sceptridium obliquum]
                                                   [Sceptridium ternatum var. dissectum]
                                               Sceptridium dissectum var. dissectum
                                             Sceptridium elegans
                                                   [Botrychium elegans]
                                             Sceptridium formosanum
                                                   [Botrychium formosanum]
                                             Sceptridium japonicum
                                                   [Botrychium daucifolium var. japonicum]
                                                   [Botrychium japonicum]
                                                   [Sceptridium daucifolium var. japonicum]
                                             Sceptridium javanicum
                                             Sceptridium jenmanii
                                                   [Botrychium alabamense]
                                                   [Botrychium jenmanii]
                                                   [Botrychium ternatum var. alabamense]
                                                   [Sceptridium alabamense]
                                                   [Sceptridium ternatum var. jenmanii]
                                             Sceptridium longistipitatum
                                                   [Botrychium longistipitatum]
                                             Sceptridium lunarioides
                                                   [Botrychium lunarioides]
                                                   [Botrypus lunarioides]
                                                   [Holubiella lunarioides]
                                             Sceptridium microphyllum
                                                   [Botrychium microphyllum]
                                             Sceptridium multifidum
                                                   [Botrychium baeckeanum]
                                                   [Botrychium breynii]
                                                   [Botrychium californicum]
                                                   [Botrychium coulteri]
                                                   [Botrychium matricariae]
                                                   [Botrychium matricarioides]
                                                   [Botrychium multifidum subsp. californicum]
                                                   [Botrychium multifidum subsp. coulteri]
                                                   [Botrychium multifidum subsp. multifidum]
                                                   [Botrychium multifidum subsp. silaifolium]
                                                   [Botrychium multifidum var. australe]
                                                   [Botrychium multifidum var. californicum]
                                                   [Botrychium multifidum var. coulteri]
                                                   [Botrychium multifidum var. dichotomum]
                                                   [Botrychium multifidum var. habereri]
                                                   [Botrychium multifidum var. intermedium]
                                                   [Botrychium multifidum var. multifidum]
                                                   [Botrychium multifidum var. silaifolium]
                                                   [Botrychium multifidum var. simplicius]
                                                   [Botrychium multifidum]
                                                   [Botrychium obliquum var. habereri]
                                                   [Botrychium obliquum var. matricarioides]
                                                   [Botrychium obliquum var. multifidum]
                                                   [Botrychium obliquum var. rutaceum]
                                                   [Botrychium occidentale]
                                                   [Botrychium rutaceum]
                                                   [Botrychium rutifolium]
                                                   [Botrychium silaifolium var. californicum]
                                                   [Botrychium silaifolium var. coulteri]
                                                   [Botrychium silaifolium]
                                                   [Botrychium silesiacum]
                                                   [Botrychium ternatum f. coulteri]
                                                   [Botrychium ternatum f. intermedium]
                                                   [Botrychium ternatum f. silaifolium]
                                                   [Botrychium ternatum var. coulteri]
                                                   [Botrychium ternatum var. intermedium]
                                                   [Botrychium ternatum var. silaefolium]
                                                   [Botrychium ternatum var. silaifolium]
                                                   [Osmunda bavarica]
                                                   [Osmunda lunaria var. beckeana]
                                                   [Osmunda matricariae]
                                                   [Osmunda matricarioides]
                                                   [Osmunda multifida]
                                                   [Sceptridium californicum]
                                                   [Sceptridium coulteri]
                                                   [Sceptridium matricariae]
                                                   [Sceptridium obliquum var. habereri]
                                                   [Sceptridium obliquum var. intermedium]
                                                   [Sceptridium silaifolium]
                                                   [Sceptridium ternatum var. californicum]
                                                   [Sceptridium ternatum var. coulteri]
                                               Sceptridium multifidum var. multifidum
                                             Sceptridium nipponicum
                                                   [Botrychium nipponicum]
                                               Sceptridium nipponicum var. minus
                                                     [Botrychium japonicum var. minus]
                                                     [Botrychium minus]
                                                     [Botrychium nipponicum var. minus]
                                                     [Sceptridium minus]
                                               Sceptridium nipponicum var. nipponicum
                                             Sceptridium oneidense
                                                   [Botrychium dissectum f. oneidense]
                                                   [Botrychium dissectum var. oneidense]
                                                   [Botrychium multifidum var. oneidense]
                                                   [Botrychium obliquum f. oneidense]
                                                   [Botrychium obliquum var. oneidense]
                                                   [Botrychium oneidense]
                                                   [Botrychium ternatum f. oneidense]
                                                   [Botrychium ternatum var. oneidense]
                                                   [Sceptridium obliquum var. oneidense]
                                             Sceptridium pseudoternatum
                                                   [Botrychium pseudoternatum]
                                                   [Botrychium ternatum var. pseudoternatum]
                                                   [Sceptridium ternatum var. pseudoternatum]
                                             Sceptridium pulchrum
                                                   [Botrychium pulchrum]
                                             Sceptridium robustum
                                                   [Botrychium longipedunculatum]
                                                   [Botrychium multifidum subsp. robustum]
                                                   [Botrychium multifidum var. robustum]
                                                   [Botrychium robustum]
                                                   [Botrychium rutifolium var. robustum]
                                                   [Botrychium sutchuanense]
                                                   [Botrychium ternatum f. robustum]
                                                   [Botrychium ternatum subsp. robustum]
                                                   [Sceptridium multifidum subsp. robustum]
                                                   [Sceptridium multifidum var. robustum]
                                             Sceptridium rugulosum
                                                   [Botrychium multifidum f. dentatum]
                                                   [Botrychium rugulosum]
                                             Sceptridium schaffneri
                                                   [Botrychium pusillum]
                                                   [Botrychium schaffneri var. pusillum]
                                                   [Botrychium schaffneri]
                                                   [Sceptridium pusillum]
                                             Sceptridium silvicola
                                                   [Botrychium japonicum var. silvicola]
                                                   [Botrychium silvicola]
                                                   [Sceptridium japonicum var. silvicola]
                                             Sceptridium subbifoliatum
                                                   [Botrychium subbifoliatum]
                                             Sceptridium ternatum
                                                   [Botrychium ternatum]
                                                   [Osmunda ternata]
                                             Sceptridium triangularifolium
                                                   [Botrychium triangularifolium]
                                             Sceptridium underwoodianum
                                                   [Botrychium lunarioides var. daedaleum]
                                                   [Botrychium underwoodianum]
                                                   [Sceptridium ternatum var. underwoodianum]
                                             Sceptridium x argutum
                                             Sceptridium x elegans
                                             Sceptridium x longistipitatum
                                             Sceptridium x pseudoternatum
                                             Sceptridium x pulchrum
                                             Sceptridium x silvicola
                              Helminthostachyoideae
                                     Helminthostachys
                                           [Botryopteris]
                                           [Ophiala]
                                             Helminthostachys zeylanica
                                                   [Botrychium zeylanicum]
                                                   [Botryopteris crenata]
                                                   [Botryopteris mexicana]
                                                   [Helminthostachys crenata]
                                                   [Helminthostachys dulcis]
                                                   [Helminthostachys integrifolia]
                                                   [Helminthostachys laciniata]
                                                   [Helminthostachys mexicana]
                                                   [Helminthostachys zeylanica var. brachyspicae]
                                                   [Ophiala zeylanica]
                                                   [Osmunda laciniata]
                                                   [Osmunda zeylanica]
                              Mankyuoideae
                                     Mankyua
                                             Mankyua chejuense
                              Ophioglossoideae
                                     [Ophioglosseae]
                                     Cheiroglossa
                                             Cheiroglossa malgassica
                                                   [Cheiroglossa palmata var. malgassica]
                                                   [Ophioglossum malgassicum]
                                             Cheiroglossa palmata
                                                   [Cheiroglossa austrobrasiliensis]
                                                   [Ophioderma palmata]
                                                   [Ophioglossum palmatum]
                                     Ophioderma
                                             Ophioderma falcatum
                                                   [Ophioderma pendulum var. falcatum]
                                                   [Ophioglossum falcatum]
                                                   [Ophioglossum pendulum subsp. falcatum]
                                             Ophioderma intermedium
                                                   [Ophioglossum intermedium]
                                             Ophioderma pendulum
                                                   [Ophioglossum furcatum]
                                                   [Ophioglossum moultonii]
                                                   [Ophioglossum pendulum subsp. pendulum]
                                                   [Ophioglossum pendulum]
                                               Ophioderma pendulum var. pendulum
                                             Ophioderma simplex
                                                   [Ophioglossum simplex]
                                     Ophioglossum
                                             Ophioglossum ammophilum
                                             Ophioglossum austroasiaticum
                                             Ophioglossum azoricum
                                             Ophioglossum californicum
                                                   [Ophioglossum lusitanicum subsp. californicum]
                                                   [Ophioglossum lusitanicum var. californicum]
                                             Ophioglossum capense
                                             Ophioglossum caroticaule
                                             Ophioglossum convexum
                                             Ophioglossum coriaceum
                                                   [Ophioglossum lusitanicum subsp. coriaceum]
                                                   [Ophioglossum minimum]
                                                   [Ophioglossum vulgatum subsp. minimum]
                                                   [Ophioglossum vulgatum var. minimum]
                                             Ophioglossum costatum
                                                   [Ophioglossum aphrodisiacum]
                                                   [Ophioglossum brevipes]
                                                   [Ophioglossum bulbosum]
                                                   [Ophioglossum felixii]
                                                   [Ophioglossum fibrosum]
                                                   [Ophioglossum pedunculosum]
                                                   [Ophioglossum vulgatum var. costatum]
                                                   [Ophioglossum vulgatum var. pedunculosum]
                                                   [Ophioglossum wightii]
                                             Ophioglossum crotalophoroides
                                               Ophioglossum crotalophoroides subsp. crotalophoroides
                                                     [Ophioglossum stipatum]
                                                     [Ophioglossum tuberosum]
                                                     [Ophioglossum vulgatum var. crotalophoroides]
                                               Ophioglossum crotalophoroides subsp. robustum
                                               Ophioglossum crotalophoroides var. nanum
                                             Ophioglossum eliminatum
                                             Ophioglossum engelmannii
                                                   [Ophioglossum vulgatum f. engelmannii]
                                                   [Ophioglossum vulgatum var. engelmannii]
                                             Ophioglossum fernandezianum
                                             Ophioglossum gomezianum
                                             Ophioglossum gracile
                                             Ophioglossum gracillimum
                                                   [Ophioglossum lusitanicum var. gracillimum]
                                             Ophioglossum gramineum
                                                   [Ophioglossum dietrichiae]
                                                   [Ophioglossum gramineum var. majus]
                                                   [Ophioglossum gregarium]
                                                   [Ophioglossum inconspicuum f. majus]
                                                   [Ophioglossum inconspicuum]
                                                   [Ophioglossum lanceolatum]
                                                   [Ophioglossum moluccanum f. inconspicuum]
                                                   [Ophioglossum prantlii]
                                                   [Ophioglossum vulgatum var. gramineum]
                                                   [Ophioglossum vulgatum var. lanceolatum]
                                               Ophioglossum gramineum var. gramineum
                                             Ophioglossum harrisii
                                                   [Ophioglossum ekmanii]
                                             Ophioglossum kawamurae
                                                   [Rhizoglossum kawamurae]
                                             Ophioglossum lancifolium
                                             Ophioglossum latifolium
                                                   [Ophioglossum gomezianum var. latifolium]
                                             Ophioglossum lineare
                                             Ophioglossum louisii
                                                   [Cheiroglossa louisii]
                                             Ophioglossum lusitanicum
                                                   [Ophioglossum braunii]
                                                   [Ophioglossum loureirianum]
                                                   [Ophioglossum lusitanicum f. latifolium]
                                                   [Ophioglossum lusitanicum f. longipedunculatum]
                                             Ophioglossum lusoafricanum
                                             Ophioglossum malviae
                                                   [Ophioglossum gujaratense]
                                             Ophioglossum melipillense
                                             Ophioglossum namegatae
                                             Ophioglossum nudicaule
                                                   [Ophioglossum dendroneuron]
                                                   [Ophioglossum ellipticum]
                                                   [Ophioglossum nudicaule f. minus]
                                                   [Ophioglossum nudicaule var. vulcanicum]
                                                   [Ophioglossum vulgatum var. nudicaule]
                                                   [Ophioglossum vulgatum var. surinamense]
                                               Ophioglossum nudicaule var. laxum
                                                     [Ophioglossum nudicaule var. minus]
                                               Ophioglossum nudicaule var. nudicaule
                                               Ophioglossum nudicaule var. robustum
                                               Ophioglossum nudicaule var. tenerum
                                                     [Ophioglossum mononeuron]
                                                     [Ophioglossum spruceanum]
                                                     [Ophioglossum tenerum]
                                                     [Ophioglossum ypanemense]
                                             Ophioglossum oblongum
                                             Ophioglossum oleosum
                                                   [Ophioglossum raphaelianum]
                                             Ophioglossum opacum
                                                   [Ophioglossum crotalophoroides var. opacum]
                                             Ophioglossum parvifolium
                                                   [Ophioglossum capense var. nudicaule]
                                                   [Ophioglossum luerssenii]
                                                   [Ophioglossum macrorrhizum]
                                                   [Ophioglossum moluccanum f. pumilum]
                                                   [Ophioglossum nudicaule var. macrorrhizum]
                                                   [Ophioglossum pumilum]
                                                   [Ophioglossum schlechteri]
                                                   [Ophioglossum schmidii]
                                                   [Ophioglossum vulgatum var. luerssenii]
                                                   [Ophioglossum vulgatum var. macrorrhizum]
                                             Ophioglossum parvum
                                             Ophioglossum petiolatum
                                                   [Ophioglossum cognatum]
                                                   [Ophioglossum elongatum]
                                                   [Ophioglossum floridanum f. favosum]
                                                   [Ophioglossum floridanum f. reticulosum]
                                                   [Ophioglossum floridanum]
                                                   [Ophioglossum litorale]
                                                   [Ophioglossum moluccanum f. complicatum]
                                                   [Ophioglossum moluccanum]
                                                   [Ophioglossum pedunculosum var. australasiaticum]
                                                   [Ophioglossum reticulatum f. complicatum]
                                                   [Ophioglossum vulgatum var. australasiaticum]
                                             Ophioglossum polyphyllum
                                                   [Ophioglossum aitchisonii]
                                                   [Ophioglossum capense var. regulare]
                                                   [Ophioglossum concinnum]
                                                   [Ophioglossum cuspidatum]
                                                   [Ophioglossum regulare]
                                                   [Ophioglossum tapinum]
                                                   [Ophioglossum vulgare var. aitchisonii]
                                                   [Ophioglossum vulgatum f. cuspidatum]
                                                   [Ophioglossum vulgatum var. polyphyllum]
                                               Ophioglossum polyphyllum var. angustifolium
                                               Ophioglossum polyphyllum var. polyphyllum
                                             Ophioglossum pusillum
                                                   [Ophioglossum vulgatum f. pseudopodum]
                                                   [Ophioglossum vulgatum f. pusillum]
                                                   [Ophioglossum vulgatum var. pseudopodum]
                                             Ophioglossum reticulatum
                                                   [Ophioglossum cordifolium]
                                                   [Ophioglossum cumingianum]
                                                   [Ophioglossum holm-nielsenii]
                                                   [Ophioglossum moluccanum f. dilatatum]
                                                   [Ophioglossum obovatum]
                                                   [Ophioglossum ovatum]
                                                   [Ophioglossum pedunculatum]
                                                   [Ophioglossum peruvianum]
                                                   [Ophioglossum raciborskii]
                                                   [Ophioglossum ramosii]
                                                   [Ophioglossum reticulatum var. acutius]
                                                   [Ophioglossum reticulatum var. polyangium]
                                                   [Ophioglossum timorense]
                                                   [Ophioglossum usterianum]
                                                   [Ophioglossum vulgatum f. dilatatum]
                                                   [Ophioglossum vulgatum var. reticulatum]
                                                   Ophioglossum reticulatum f. reticulatum
                                             Ophioglossum richardsiae
                                             Ophioglossum rubellum
                                                   [Ophioglossum indicum]
                                             Ophioglossum sandieae
                                             Ophioglossum scariosum
                                             Ophioglossum thermale
                                                   [Ophioglossum angustatum]
                                                   [Ophioglossum bucharicum]
                                                   [Ophioglossum japonicum]
                                                   [Ophioglossum nipponicum]
                                                   [Ophioglossum savatieri]
                                                   [Ophioglossum thermale var. nipponicum]
                                                   [Ophioglossum vulgatum var. thermale]
                                             Ophioglossum thomasii
                                             Ophioglossum vulgare
                                             Ophioglossum vulgatum
                                               Ophioglossum vulgatum subsp. africanum
                                                     [Ophioglossum sarcophyllum]
                                               Ophioglossum vulgatum subsp. kilimandscharicum
                                                     [Ophioglossum microstichum]
                                                     [Ophioglossum vulgatum var. kilimandscharicum]
                                               Ophioglossum vulgatum subsp. vulgatum
                                                     [Ophioglossum alaskanum]
                                                     [Ophioglossum arenarium]
                                                     [Ophioglossum dudadae]
                                                     [Ophioglossum mironovii]
                                                     [Ophioglossum pringlei]
                                                     [Ophioglossum pycnostichum]
                                                     [Ophioglossum sabulicolum]
                                                     [Ophioglossum unifolium]
                                                     [Ophioglossum valdivianum]
                                                     [Ophioglossum vulgatum f. alaskanum]
                                                     [Ophioglossum vulgatum f. arenarium]
                                                     [Ophioglossum vulgatum f. lanceolatum]
                                                     [Ophioglossum vulgatum var. alaskanum]
                                                     [Ophioglossum vulgatum var. pycnostichum]
                                                     [Ophioglossum vulgatum var. valdivianum]
                                               Ophioglossum vulgatum var. minus
                                               Ophioglossum vulgatum var. taylorianum
                                             Ophioglossum x giovanninii
                                             Ophioglossum x pierinii
                                             Ophioglossum x pseudoazoricum
                                             Ophioglossum yongrenense
                                             † Ophioglossum granulatum
                                     Rhizoglossum
                                             Rhizoglossum bergianum
                                                   [Ophioglossum bergianum]
                                     † Ophioglossisporites
                                             † Ophioglossisporites cullensis