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  Plantae
    Tracheophyta
           [Tracheobionta]
      Pteridophyta
            Equisetopsida
                    Equisetales
                            Equisetaceae
                                     Equisetum
                                             Equisetum alaskanum
                                             Equisetum arvense
                                                   [Equisetum arvense var. alpestre]
                                                   [Equisetum arvense var. boreale]
                                                   [Equisetum arvense var. campestre]
                                                   [Equisetum arvense var. ramulosum]
                                                   [Equisetum arvense var. riparium]
                                                   [Equisetum calderi]
                                                   [Equisetum saxicola]
                                               Equisetum arvense diffusum
                                                     [Equisetum diffusum]
                                                   Equisetum arvense f. decumbens
                                               Equisetum arvense subsp. arvense
                                                     [Equisetum arvense f. alpestre]
                                                     [Equisetum arvense f. campestre]
                                                     [Equisetum arvense f. diffusum]
                                                     [Equisetum arvense f. macrostachya]
                                                     [Equisetum arvense f. microstachya]
                                                     [Equisetum arvense f. nemorosum]
                                                     [Equisetum arvense f. pseudonemorosum]
                                                     [Equisetum arvense f. pseudovarium]
                                                     [Equisetum arvense f. ramulosum]
                                                     [Equisetum arvense subsp. alpestre]
                                                     [Equisetum arvense subsp. boreale]
                                                     [Equisetum arvense var. decumbens]
                                                     [Equisetum arvense var. diffusum]
                                                     [Equisetum arvense var. granulatum]
                                                     [Equisetum arvense var. nemorosum]
                                                     [Equisetum arvense var. polystachyon]
                                                     [Equisetum arvense var. robustum]
                                                     [Equisetum arvense var. serotinum]
                                                     [Equisetum campestre]
                                               Equisetum arvense subsp. diffusum
                                               Equisetum arvense var. arvense
                                             Equisetum bogotense
                                             Equisetum boreale
                                             Equisetum braunii
                                             Equisetum debile
                                             Equisetum fluviatile
                                                   [Equisetum fluviatile f. linnaeanum]
                                                   [Equisetum fluviatile f. minus]
                                                   [Equisetum fluviatile f. natans]
                                                   [Equisetum fluviatile var. verticillatum]
                                                   [Equisetum limosum var. verticillatum]
                                               Equisetum fluviatile var. limosum
                                             Equisetum fontinale
                                             Equisetum giganteum
                                                   [Equisetum schaffneri]
                                                   [Equisetum xylochaetum]
                                             Equisetum heleocharis
                                             Equisetum hyemale
                                                   [Equisetum hyemale var. ramigerum]
                                               Equisetum hyemale subsp. hyemale
                                               Equisetum hyemale subsp. moorei
                                               Equisetum hyemale var. affine
                                                     [Equisetum affine]
                                                     [Equisetum hyemale subsp. affine]
                                                     [Equisetum hyemale var. californicum]
                                                     [Equisetum hyemale var. pseudohyemale]
                                                     [Equisetum hyemale var. robustum]
                                                     [Equisetum praealtum]
                                                     [Equisetum robustum]
                                                     [Hippochaete hyemalis subsp. affinis]
                                                     [Hippochaete hyemalis]
                                               Equisetum hyemale var. hyemale
                                             Equisetum laevigatum
                                                   [Equisetum funstonii f. caespitosum]
                                                   [Equisetum funstonii f. nudum]
                                                   [Equisetum funstonii f. polystachyum]
                                                   [Equisetum funstonii]
                                                   [Equisetum kansanum]
                                                   [Equisetum laevigatum f. caespitosum]
                                                   [Equisetum laevigatum f. proliferum]
                                                   [Equisetum laevigatum f. ramosum]
                                                   [Equisetum laevigatum subsp. funstonii]
                                                   [Hippochaete laevigata]
                                               Equisetum laevigatum subsp. laevigatum
                                             Equisetum limosum
                                             Equisetum myriochaetum
                                             Equisetum nelsonii
                                                   [Hippochaete nelsonii]
                                             Equisetum palustre
                                                   [Equisetum palustre f. luxurians]
                                                   [Equisetum palustre var. nigridens]
                                                   [Equisetum palustre var. polystachyum]
                                               Equisetum palustre var. americanum
                                               Equisetum palustre var. simplicissimum
                                             Equisetum pratense
                                                   [Equisetum drummondii]
                                             Equisetum prealtum
                                             Equisetum pyramidale
                                             Equisetum ramosissimum
                                                   [Equisetum burchellii]
                                                   [Equisetum campanulatum]
                                                   [Equisetum elongatum var. simplex]
                                                   [Equisetum elongatum]
                                                   [Equisetum multiforme var. campanulatum]
                                                   [Equisetum multiforme]
                                                   [Equisetum ramosissimum var. abyssinicum]
                                                   [Equisetum ramosissimum var. arcuatum]
                                                   [Equisetum ramosissimum var. boivinii]
                                                   [Equisetum ramosissimum var. boryanum]
                                                   [Equisetum ramosissimum var. burchellii]
                                                   [Equisetum ramosissimum var. campanulatum]
                                                   [Equisetum ramosissimum var. capense]
                                                   [Equisetum ramosissimum var. distortum]
                                                   [Equisetum ramosissimum var. dregeanum]
                                                   [Equisetum ramosissimum var. flagelliferum]
                                                   [Equisetum ramosissimum var. glaucum]
                                                   [Equisetum ramosissimum var. lohseanum]
                                                   [Equisetum ramosissimum var. natalense]
                                                   [Equisetum ramosissimum var. simplex]
                                                   [Equisetum ramosissimum var. subverticillatum]
                                                   [Equisetum ramosissimum var. virgatum]
                                                   [Equisetum ramosum]
                                                   [Equisetum thunbergii]
                                               Equisetum ramosissimum subsp. debile
                                               Equisetum ramosissimum subsp. ramosissimum
                                               Equisetum ramosissimum var. altissimum
                                               Equisetum ramosissimum var. japonicum
                                             Equisetum scirpoides
                                                   [Equisetum scirpoides var. minus]
                                                   [Equisetum tenellum]
                                             Equisetum sylvaticum
                                                   [Equisetum sylvaticum f. opsistachyum]
                                                   Equisetum sylvaticum f. multiramosum
                                               Equisetum sylvaticum var. multiramosum
                                               Equisetum sylvaticum var. pauciramosum
                                               Equisetum sylvaticum var. sylvaticum
                                             Equisetum telmateia
                                                   [Equisetum telmateia var. breve]
                                                   [Equisetum telmateia var. caespitosum]
                                                   [Equisetum telmateia var. comosum]
                                                   [Equisetum telmateia var. serotinum]
                                               Equisetum telmateia subsp. braunii
                                                     [Equisetum maximum]
                                                     [Equisetum telmateia var. hillii]
                                               Equisetum telmateia subsp. telmateia
                                                     [Equisetum eburneum]
                                               Equisetum telmateia var. braunii
                                               Equisetum telmateia var. telmateia
                                             Equisetum trachyodon
                                                   [Equisetum mackaii]
                                             Equisetum variegatum
                                               Equisetum variegatum ssp. variegatum
                                               Equisetum variegatum subsp. alaskanum
                                               Equisetum variegatum subsp. variegatum
                                                     [Equisetum variegatum var. wilsoni]
                                               Equisetum variegatum var. alaskanum
                                               Equisetum variegatum var. anceps
                                               Equisetum variegatum var. jesupii
                                               Equisetum variegatum var. nelsonii
                                               Equisetum variegatum var. variegatum
                                             Equisetum x arcticum
                                             Equisetum x dycei
                                             Equisetum x font-queri
                                             Equisetum x haukeanum
                                             Equisetum x moorei
                                             Equisetum × ferrissii
                                                   [Equisetum X ferrissii]
                                                   [Equisetum ferrissii]
                                                   [Equisetum hyemale var. elatum]
                                                   [Equisetum hyemale var. intermedium]
                                                   [Equisetum intermedium]
                                                   [Equisetum laevigatum var. elatum]
                                                   [Equisetum praealtum var. laevigatum]
                                             Equisetum × litorale
                                                   [Equisetum litorale]
                                                   [Equisetum x litorale]
                                             Equisetum × mackayi
                                                   [Equisetum x mackaii]
                                                   [Equisetum x trachyodon]
                                                   [Equisetum × mackaii]
                                             Equisetum × moorei
                                                   [Equisetum hyemale var. moorei]
                                             Equisetum × nelsonii
                                                   [Equisetum nelsoni]
                                                   [Equisetum x nelsonii]
                                     Hippochaete
                                             Hippochaete ramosissima
                                             Hippochaete variegata