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  Plantae
    Tracheophyta
           [Tracheobionta]
      Pteridophyta
            Polypodiopsida
                    Polypodiales
                            <b>Blechnaceae</b>
                                     <i>Anchistea</i>
                                             <i>Anchistea virginica</i>
                                                   [Blechnum virginicum]
                                                   [Doodia virginica]
                                                   [Woodwardia bannisteriana]
                                                   [Woodwardia virginica]
                                     <i>Austroblechnum</i>
                                             <i>Austroblechnum aequatoriense</i>
                                             <i>Austroblechnum aggregatum</i>
                                                   [Blechnum aggregatum]
                                             <i>Austroblechnum andinum</i>
                                             <i>Austroblechnum asperum</i>
                                             <i>Austroblechnum banksii</i>
                                                   [Blechnum banksii]
                                                   [Lomaria banksii]
                                             <i>Austroblechnum bullatum</i>
                                             <i>Austroblechnum colensoi</i>
                                             <i>Austroblechnum corralense</i>
                                             <i>Austroblechnum difforme</i>
                                                   [Blechnum difforme]
                                             <i>Austroblechnum divergens</i>
                                                   [Blechnum exaltatum]
                                                   [Blechnum floresii var. spruceana]
                                                   [Blechnum floresii]
                                             <i>Austroblechnum durum</i>
                                                   [Blechnum durum]
                                             <i>Austroblechnum ivohibense</i>
                                                   [Blechnum ivohibense]
                                             <i>Austroblechnum jamaicense</i>
                                                   [Blechnum jamaicense]
                                             <i>Austroblechnum keysseri</i>
                                                   [Blechnum deorsolobatum]
                                                   [Blechnum keysseri]
                                             <i>Austroblechnum lanceolatum</i>
                                             <i>Austroblechnum lechleri</i>
                                               <i>Austroblechnum lechleri subsp. lechleri</i>
                                                     [Blechnum mochaenum]
                                             <i>Austroblechnum lehmannii</i>
                                                   [Blechnum lehmannii]
                                                   [Blechnum maxonii]
                                                   [Blechnum mexiae]
                                                   [Blechnum petiolare]
                                             <i>Austroblechnum leyboldtianum</i>
                                                   [Struthiopteris varians]
                                             <i>Austroblechnum lherminieri</i>
                                             <i>Austroblechnum melanocaulon</i>
                                               <i>Austroblechnum melanocaulon subsp. melanocaulon</i>
                                                     [Blechnum coriaceum]
                                               <i>Austroblechnum melanocaulon subsp. pallens</i>
                                                     [Lomaria elongata]
                                             <i>Austroblechnum membranaceum</i>
                                                   [Blechnum membranaceum]
                                                   [Lomaria membranacea]
                                             <i>Austroblechnum microphyllum</i>
                                                   [Blechnum microphyllum]
                                             <i>Austroblechnum norfolkianum</i>
                                                   [Blechnum norfolkianum]
                                             <i>Austroblechnum patersonii</i>
                                               <i>Austroblechnum patersonii subsp. patersonii</i>
                                                     [Lomaria patersonii]
                                               <i>Austroblechnum patersonii subsp. queenslandicum</i>
                                                     [Blechnum patersonii subsp. queenslandicum]
                                             <i>Austroblechnum penna-marina</i>
                                               <i>Austroblechnum penna-marina subsp. alpina</i>
                                                     [Lomaria alpina]
                                             <i>Austroblechnum raiateense</i>
                                                   [Blechnum raiateense]
                                             <i>Austroblechnum squamipes</i>
                                             <i>Austroblechnum stoloniferum</i>
                                             <i>Austroblechnum vieillardii</i>
                                             <i>Austroblechnum wardiae</i>
                                     <i>Bergera</i>
                                     <i>Blechnidium</i>
                                             <i>Blechnidium melanopus</i>
                              Blechnoideae
                                     <i>Spicantopsis</i>
                                             <i>Spicantopsis amabilis</i>
                                             <i>Spicantopsis hancockii</i>
                                                   [Blechnum hancockii]
                                             <i>Spicantopsis niponica</i>
                                     <i>Blechnopsis</i>
                                             <i>Blechnopsis finlaysoniana</i>
                                                   [Blechnum finlaysonianum]
                                             <i>Blechnopsis orientalis</i>
                                                   [Blechnum elongatum]
                                     <i>Blechnum</i>
                                             <i>Blechnum acutum</i>
                                             <i>Blechnum aequatoriense</i>
                                             <i>Blechnum andinum</i>
                                             <i>Blechnum angustifolium</i>
                                             <i>Blechnum appendiculatum</i>
                                             <i>Blechnum arcuatum</i>
                                             <i>Blechnum articulatum</i>
                                             <i>Blechnum asplenioides</i>
                                             <i>Blechnum attenuatum</i>
                                             <i>Blechnum auratum</i>
                                                   [Blechnum buchtienii]
                                               <i>Blechnum auratum subsp. columbiense</i>
                                             <i>Blechnum auriculatum</i>
                                             <i>Blechnum australe</i>
                                             <i>Blechnum austrobrasilianum</i>
                                             <i>Blechnum binervatum</i>
                                             <i>Blechnum blechnoides</i>
                                             <i>Blechnum boreale</i>
                                             <i>Blechnum brasiliense</i>
                                             <i>Blechnum brownei</i>
                                             <i>Blechnum capense</i>
                                             <i>Blechnum cartilagineum</i>
                                             <i>Blechnum castaneum</i>
                                             <i>Blechnum chambersii</i>
                                             <i>Blechnum chordatum</i>
                                             <i>Blechnum colensoi</i>
                                             <i>Blechnum columbiense</i>
                                               <i>Blechnum columbiense var. bogotense</i>
                                             <i>Blechnum confluens</i>
                                                   [Blechnum triangulare]
                                             <i>Blechnum contiguum</i>
                                             <i>Blechnum cordatum</i>
                                             <i>Blechnum corralense</i>
                                             <i>Blechnum discolor</i>
                                             <i>Blechnum divergens</i>
                                             <i>Blechnum diversifolium</i>
                                             <i>Blechnum ensiforme</i>
                                             <i>Blechnum falciforme</i>
                                                   [Lomaria falciformis]
                                             <i>Blechnum filiforme</i>
                                             <i>Blechnum fluviatile</i>
                                             <i>Blechnum fragile</i>
                                                   [Lomaria fragilis]
                                             <i>Blechnum francii</i>
                                                   [Blechnum obtusatum var. francii]
                                             <i>Blechnum fraseri</i>
                                             <i>Blechnum fraxineum</i>
                                             <i>Blechnum germanii</i>
                                             <i>Blechnum gibbum</i>
                                             <i>Blechnum glandulosum</i>
                                             <i>Blechnum gracile</i>
                                                   [Blechnum subdimorphum]
                                             <i>Blechnum hastatum</i>
                                                   [Blechnum auriculatum var. parvulum]
                                                   [Blechnum remotum]
                                             <i>Blechnum insularum</i>
                                             <i>Blechnum intermedium</i>
                                             <i>Blechnum kunthianum</i>
                                                   [Doodia kunthiana]
                                             <i>Blechnum laevigatum</i>
                                                   [Blechnum juergensii]
                                             <i>Blechnum lanceola</i>
                                             <i>Blechnum lanceolatum</i>
                                             <i>Blechnum lechleri</i>
                                                   [Blechnum violaceum]
                                             <i>Blechnum leyboldtianum</i>
                                             <i>Blechnum lherminieri</i>
                                             <i>Blechnum lineatum</i>
                                             <i>Blechnum longifolium</i>
                                             <i>Blechnum maximum</i>
                                                   [Doodia maxima]
                                             <i>Blechnum medium</i>
                                                   [Doodia media]
                                             <i>Blechnum melanocaulon</i>
                                             <i>Blechnum melanopus</i>
                                             <i>Blechnum meridense</i>
                                             <i>Blechnum moorei</i>
                                             <i>Blechnum nigrum</i>
                                             <i>Blechnum nipponicum</i>
                                                   [Struthiopteris niponica]
                                             <i>Blechnum obtusatum</i>
                                             <i>Blechnum occidentale</i>
                                                   [Blechnum falcatum]
                                               <i>Blechnum occidentale var. minor</i>
                                               <i>Blechnum occidentale var. minus</i>
                                               <i>Blechnum occidentale var. occidentale</i>
                                               <i>Blechnum occidentale var. pubirhachis</i>
                                             <i>Blechnum opacum</i>
                                             <i>Blechnum orientale</i>
                                             <i>Blechnum ornifolium</i>
                                             <i>Blechnum patersonii</i>
                                             <i>Blechnum penna</i>
                                             <i>Blechnum penna-marina</i>
                                             <i>Blechnum polypodioides</i>
                                                   [Blechnum pohlianum]
                                             <i>Blechnum procerum</i>
                                             <i>Blechnum pteropus</i>
                                             <i>Blechnum punctulatum</i>
                                                   [Lomaria densa]
                                                   [Lomaria punctulata]
                                               <i>Blechnum punctulatum var. krebsii</i>
                                                     [Scolopendrium krebsii]
                                             <i>Blechnum raddianum</i>
                                             <i>Blechnum regnellianum</i>
                                             <i>Blechnum rheophyticum</i>
                                             <i>Blechnum sampaioanum</i>
                                             <i>Blechnum schiedeanum</i>
                                                   [Lomaria schiedeana]
                                                   [Lomaria varians]
                                             <i>Blechnum schomburgkii</i>
                                             <i>Blechnum serrulatum</i>
                                                   [Blechnum indicum]
                                             <i>Blechnum spannagelii</i>
                                             <i>Blechnum spicant</i>
                                                   [Blechnum spicant subsp. nipponicum]
                                               <i>Blechnum spicant var. elongatum</i>
                                             <i>Blechnum stipitellatum</i>
                                             <i>Blechnum stoloniferum</i>
                                                   [Lomaria ghiesbreghtii]
                                                   [Lomaria stolonifera]
                                             <i>Blechnum striatum</i>
                                             <i>Blechnum tabulare</i>
                                             <i>Blechnum tuerckheimii</i>
                                             <i>Blechnum underwoodianum</i>
                                             <i>Blechnum unilaterale</i>
                                             <i>Blechnum valdiviense</i>
                                             <i>Blechnum varians</i>
                                             <i>Blechnum vieillardii</i>
                                               <i>Blechnum vieillardii var. simplex</i>
                                               <i>Blechnum vieillardii var. vieillardii</i>
                                             <i>Blechnum vulcanicum</i>
                                             <i>Blechnum wardiae</i>
                                             <i>Blechnum werckleanum</i>
                                                   [Struthiopteris werckleana]
                                             <i>Blechnum ×caudatum</i>
                                               <i>Blechnum australe subsp. auriculatum</i>
                                     <i>Brainea</i>
                                             <i>Brainea insignis</i>
                                                   [Blechnum insigne]
                                     <i>Cleistoblechnum</i>
                                             <i>Cleistoblechnum eburneum</i>
                                                   [Blechnum eburneum]
                                     <i>Cranfillia</i>
                                             <i>Cranfillia bakeri</i>
                                             <i>Cranfillia caudata</i>
                                                   [Blechnum sprucei]
                                             <i>Cranfillia fluviatilis</i>
                                                   [Blechnum nudius]
                                             <i>Cranfillia nigra</i>
                                                   [Lomaria nigra]
                                             <i>Cranfillia opaca</i>
                                             <i>Cranfillia sampaioana</i>
                                             <i>Cranfillia venosa</i>
                                             <i>Cranfillia vulcanica</i>
                                                   [Lomaria vulcanica]
                                     <i>Diploblechnum</i>
                                             <i>Diploblechnum diversifolium</i>
                                                   [Lomaria diversifolia]
                                             <i>Diploblechnum fraseri</i>
                                                   [Lomaria fraseri]
                                             <i>Diploblechnum neglectum</i>
                                     <i>Doodia</i>
                                             <i>Doodia aspera</i>
                                                   [Blechnum neohollandicum]
                                             <i>Doodia australis</i>
                                                   [Blechnum parrisiae]
                                                   [Blechnum parrisii]
                                                   [Doodia media subsp. australis]
                                             <i>Doodia caudata</i>
                                                   [Doodia aspera var. caudata]
                                                   [Doodia caudata var. dimorpha]
                                                   [Doodia rupestris]
                                             <i>Doodia dives</i>
                                             <i>Doodia heterophylla</i>
                                             <i>Doodia lyonii</i>
                                                   [Blechnum lyonii]
                                             <i>Doodia mollis</i>
                                     <i>Icarus</i>
                                             <i>Icarus filiformis</i>
                                                   [Lomaria filiformis]
                                     <i>Lomaria</i>
                                             <i>Lomaria attenuata</i>
                                             <i>Lomaria biserrata</i>
                                             <i>Lomaria blechnoides</i>
                                             <i>Lomaria discolor</i>
                                             <i>Lomaria fluviatilis</i>
                                             <i>Lomaria heterophylla</i>
                                             <i>Lomaria inflexa</i>
                                                   [Blechnum inflexum]
                                             <i>Lomaria lanceolata</i>
                                             <i>Lomaria minor</i>
                                             <i>Lomaria nuda</i>
                                                   [Blechnum nudum]
                                             <i>Lomaria oceanica</i>
                                             <i>Lomaria pumila</i>
                                             <i>Lomaria spicant</i>
                                             <i>Lomaria tenuifolia</i>
                                     <i>Lomaridium</i>
                                             <i>Lomaridium acutum</i>
                                             <i>Lomaridium attenuatum</i>
                                                   [Onoclea attenuata]
                                             <i>Lomaridium binervatum</i>
                                                   [Blechnum meridense var. costaricense]
                                                   [Blechnum plumieri]
                                             <i>Lomaridium ensiforme</i>
                                                   [Struthiopteris ensiformis]
                                             <i>Lomaridium fragile</i>
                                                   [Blechnum binervatum subsp. fragile]
                                                   [Lomaria onocleoides]
                                             <i>Lomaridium nigrocostatum</i>
                                             <i>Lomaridium pteropus</i>
                                             <i>Lomaridium schottii</i>
                                     <i>Lomariocycas</i>
                                             <i>Lomariocycas aurata</i>
                                                   [Lomariocycas buchtienii]
                                             <i>Lomariocycas columbiensis</i>
                                             <i>Lomariocycas cycadifolia</i>
                                                   [Blechnum cycadifolium]
                                             <i>Lomariocycas insularis</i>
                                             <i>Lomariocycas madagascariensis</i>
                                             <i>Lomariocycas magellanica</i>
                                                   [Blechnum magellanicum]
                                                   [Lomaria magellanica]
                                             <i>Lomariocycas obtusifolia</i>
                                                   [Blechnum obtusifolium]
                                             <i>Lomariocycas rufa</i>
                                                   [Blechnum rufum]
                                             <i>Lomariocycas schomburgkii</i>
                                             <i>Lomariocycas shaferi</i>
                                                   [Blechnum shaferi]
                                             <i>Lomariocycas tabularis</i>
                                                   [Blechnum imperiale]
                                                   [Lomaria boryana]
                                             <i>Lomariocycas werckleana</i>
                                                   [Lomaria werckleana]
                                     <i>Lorinseria</i>
                                             <i>Lorinseria areolata</i>
                                                   [Lorinseria areolata f. onocleoides]
                                                   [Woodwardia areolata]
                                                   [Woodwardia onocleoides]
                                     <i>Neoblechnum</i>
                                             <i>Neoblechnum brasiliense</i>
                                                   [Blechnum nigrosquamatum]
                                     <i>Oceaniopteris</i>
                                             <i>Oceaniopteris cartilaginea</i>
                                             <i>Oceaniopteris ciliata</i>
                                                   [Lomaria ciliata]
                                             <i>Oceaniopteris egregia</i>
                                                   [Blechnum egregium]
                                             <i>Oceaniopteris francii</i>
                                             <i>Oceaniopteris gibba</i>
                                                   [Lomaria gibba]
                                             <i>Oceaniopteris obtusata</i>
                                             <i>Oceaniopteris vittata</i>
                                                   [Blechnum bamlerianum]
                                                   [Blechnum dentatum]
                                                   [Blechnum vittatum]
                                             <i>Oceaniopteris whelanii</i>
                                     <i>Parablechnum</i>
                                             <i>Parablechnum capense</i>
                                                   [Lomaria capensis]
                                             <i>Parablechnum chauliodontum</i>
                                                   [Blechnum chauliodontum]
                                             <i>Parablechnum chilense</i>
                                                   [Blechnum arborescens]
                                             <i>Parablechnum chiriquanum</i>
                                                   [Blechnum chiriquanum]
                                             <i>Parablechnum christii</i>
                                                   [Blechnum christii]
                                             <i>Parablechnum cordatum</i>
                                                   [Blechnum chilense]
                                                   [Lomaria gilliesii]
                                             <i>Parablechnum falciforme</i>
                                                   [Struthiopteris falciformis]
                                             <i>Parablechnum hieronymi</i>
                                                   [Blechnum brassii]
                                                   [Blechnum hieronymi]
                                             <i>Parablechnum hieronymii</i>
                                             <i>Parablechnum lechleri</i>
                                                   [Lomaria violacea]
                                             <i>Parablechnum lima</i>
                                             <i>Parablechnum lineatum</i>
                                             <i>Parablechnum loxense</i>
                                                   [Blechnum loxense]
                                             <i>Parablechnum milnei</i>
                                                   [Blechnum milnei]
                                             <i>Parablechnum minus</i>
                                                   [Blechnum capense var. minor]
                                                   [Blechnum minus]
                                             <i>Parablechnum moranianum</i>
                                             <i>Parablechnum nesophilum</i>
                                                   [Blechnum nesophilum]
                                             <i>Parablechnum novae-zelandiae</i>
                                                   [Blechnum novae-zelandiae]
                                             <i>Parablechnum procerum</i>
                                                   [Lomaria procera]
                                             <i>Parablechnum proliferum</i>
                                                   [Blechnum proliferum]
                                                   [Blechnum viviparum]
                                             <i>Parablechnum revolutum</i>
                                                   [Blechnum archboldii]
                                                   [Blechnum revolutum]
                                             <i>Parablechnum ryanii</i>
                                                   [Blechnum nesioticum]
                                                   [Blechnum ryanii]
                                             <i>Parablechnum schiedeanum</i>
                                                   [Struthiopteris schiedeana]
                                             <i>Parablechnum sessilifolium</i>
                                                   [Blechnum sessilifolium]
                                             <i>Parablechnum stipitellatum</i>
                                             <i>Parablechnum stuebelii</i>
                                             <i>Parablechnum triangularifolium</i>
                                             <i>Parablechnum tuerckheimii</i>
                                             <i>Parablechnum vestitum</i>
                                                   [Blechnum vestitum]
                                             <i>Parablechnum wattsii</i>
                                                   [Blechnum wattsii]
                                     <i>Pteridoblechnum</i>
                                             <i>Pteridoblechnum neglectum</i>
                                     <i>Sadleria</i>
                                             <i>Sadleria cyatheoides</i>
                                             <i>Sadleria hillebrandii</i>
                                             <i>Sadleria pallida</i>
                                                   [Sadleria fauriei]
                                                   [Sadleria rigida]
                                             <i>Sadleria polystichoides</i>
                                             <i>Sadleria souleyetiana</i>
                                             <i>Sadleria souleytiana</i>
                                                   [Blechnum souleytianum]
                                             <i>Sadleria squarrosa</i>
                                                   [Blechnum squarrosum]
                                                   [Gymnogramma sadlerioides]
                                             <i>Sadleria unisora</i>
                                             <i>Sadleria wagneriana</i>
                                     <i>Salpichlaena</i>
                                             <i>Salpichlaena hookeriana</i>
                                             <i>Salpichlaena volubilis</i>
                                                   [Blechnum volubile]
                                                   [Salpichlaena thalassica]
                                     <i>Steenisioblechnum</i>
                                             <i>Steenisioblechnum acuminatum</i>
                                     <i>Stenochlaena</i>
                                             <i>Stenochlaena amydrophlebia</i>
                                             <i>Stenochlaena areolaris</i>
                                             <i>Stenochlaena cumingii</i>
                                             <i>Stenochlaena kunzeana</i>
                                             <i>Stenochlaena milnei</i>
                                             <i>Stenochlaena palustris</i>
                                                   [Lomariopsis scandens]
                                                   [Stenochlaena scandens]
                                             <i>Stenochlaena sorbifolia</i>
                                             <i>Stenochlaena tenuifolia</i>
                              Stenochlaenoideae
                                     <i>Struthiopteris</i>
                                             <i>Struthiopteris amabilis</i>
                                                   [Blechnum amabile]
                                             <i>Struthiopteris castanea</i>
                                             <i>Struthiopteris exaltata</i>
                                             <i>Struthiopteris hancockii</i>
                                                   [Blechnum niponicum]
                                             <i>Struthiopteris lineata</i>
                                             <i>Struthiopteris polypodioides</i>
                                             <i>Struthiopteris spicant</i>
                                                   [Blechnum spicant f. serratum]
                                                   [Lomaria borealis]
                                               <i>Struthiopteris spicant var. pradae</i>
                                             <i>Struthiopteris underwoodiana</i>
                                     <i>Telmatoblechnum</i>
                                             <i>Telmatoblechnum indicum</i>
                                             <i>Telmatoblechnum serrulatum</i>
                                     <i>Woodwardia</i>
                                             <i>Woodwardia angustifolia</i>
                                             <i>Woodwardia fimbriata</i>
                                                   [Woodwardia chamissoi]
                                             <i>Woodwardia harlandii</i>
                                             <i>Woodwardia japonica</i>
                                             <i>Woodwardia kempii</i>
                                                   [Woodwardia takeoi]
                                             <i>Woodwardia martinezii</i>
                                             <i>Woodwardia orientalis</i>
                                             <i>Woodwardia prolifera</i>
                                                   [Woodwardia orientalis var. formosana]
                                             <i>Woodwardia radicans</i>
                                               <i>Woodwardia radicans var. americana</i>
                                             <i>Woodwardia semicordata</i>
                                             <i>Woodwardia spinulosa</i>
                                             <i>Woodwardia unigemmata</i>
                              Woodwardioideae