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  Plantae
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     Streptophyta
     Embryophyta
      Tracheophyta
        Polypodiophytina
            Polypodiopsida
                   [Arthropsida]
                   [Equisetopsida]
                   [Eusporangiopsida]
                   [Filicopsida]
                   [Marattiopsida]
                   [Psilopsida]
                   [Psilotopsida]
              Equisetidae
                    Equisetales
                            Equisetaceae
                                     Allostelites
                                             Allostelites pratense
                                             Allostelites sylvaticum
                                     Equisetum
                                             Equisetum X ferrissii
                                                   [Equisetum ferrissii]
                                             Equisetum X litorale
                                             Equisetum affine
                                             Equisetum alaskanum
                                             Equisetum alexanderi
                                             Equisetum alpestre
                                             Equisetum alpinum
                                             Equisetum alsaticum
                                             Equisetum altissimum
                                             Equisetum aquaticum
                                             Equisetum araucanum
                                             Equisetum arenarium
                                             Equisetum arvense
                                                   [Allostelites arvensis]
                                                   [Equisetum arvense var. alpestre]
                                                   [Equisetum arvense var. boreale]
                                                   [Equisetum arvense var. campestre]
                                                   [Equisetum arvense var. riparium]
                                                   [Equisetum calderi]
                                                   Equisetum arvense f. agreste
                                                   Equisetum arvense f. alpestre
                                                   Equisetum arvense f. arcticum
                                                   Equisetum arvense f. atratidens
                                                   Equisetum arvense f. caespitosum
                                                   Equisetum arvense f. campestre
                                                   Equisetum arvense f. decumbens
                                                   Equisetum arvense f. diffusum
                                                   Equisetum arvense f. irriguum
                                                   Equisetum arvense f. loennbohmii
                                                   Equisetum arvense f. macrostachya
                                                   Equisetum arvense f. microstachya
                                                   Equisetum arvense f. nanum
                                                   Equisetum arvense f. nemorosum
                                                   Equisetum arvense f. polystachyon
                                                   Equisetum arvense f. proliferum
                                                   Equisetum arvense f. pseudoalpestre
                                                   Equisetum arvense f. pseudonemorosum
                                                   Equisetum arvense f. pseudovarium
                                                   Equisetum arvense f. ramulosum
                                                   Equisetum arvense f. riparium
                                               Equisetum arvense subsp. alpestre
                                               Equisetum arvense subsp. arvense
                                               Equisetum arvense subsp. boreale
                                               Equisetum arvense subsp. diffusum
                                                     [Equisetum diffusum]
                                               Equisetum arvense subsp. ramulosum
                                               Equisetum arvense var. arenicola
                                               Equisetum arvense var. coaetaneum
                                               Equisetum arvense var. decumbens
                                               Equisetum arvense var. diffusum
                                               Equisetum arvense var. erectum
                                               Equisetum arvense var. frondescens
                                               Equisetum arvense var. granulatum
                                               Equisetum arvense var. nemorosum
                                               Equisetum arvense var. nudum
                                               Equisetum arvense var. polystachyon
                                               Equisetum arvense var. proliferum
                                               Equisetum arvense var. ramulosum
                                               Equisetum arvense var. robustum
                                               Equisetum arvense var. triangulare
                                             Equisetum asperrimum
                                             Equisetum azoricum
                                             Equisetum bogotense
                                               Equisetum bogotense var. flagelliforme
                                               Equisetum bogotense var. nudum
                                             Equisetum bolivianum
                                             Equisetum boreale
                                             Equisetum brasiliense
                                                   Equisetum brasiliense f. nuda
                                                   Equisetum brasiliense f. ramosa
                                               Equisetum brasiliense var. nuda
                                               Equisetum brasiliense var. ramosa
                                             Equisetum braunii
                                             Equisetum burchellii
                                             Equisetum caenosum
                                             Equisetum caespitosum
                                             Equisetum californicum
                                             Equisetum campanulatum
                                             Equisetum campestre
                                             Equisetum capillare
                                             Equisetum caracasanum
                                             Equisetum debile
                                               Equisetum debile var. caespitosum
                                               Equisetum debile var. divaricatum
                                               Equisetum debile var. gracile
                                               Equisetum debile var. laevissimum
                                               Equisetum debile var. majus
                                               Equisetum debile var. minus
                                               Equisetum debile var. nudum
                                               Equisetum debile var. pashan
                                               Equisetum debile var. polystachyum
                                             Equisetum dubium
                                             Equisetum eburneum
                                               Equisetum eburneum var. frondescens
                                               Equisetum eburneum var. serotinum
                                             Equisetum elongatum
                                                   Equisetum elongatum f. minor
                                                   Equisetum elongatum f. simplex
                                                   Equisetum elongatum f. subverticillatum
                                               Equisetum elongatum var. abyssinicum
                                               Equisetum elongatum var. affine
                                               Equisetum elongatum var. annuliferum
                                               Equisetum elongatum var. arabicum
                                               Equisetum elongatum var. arcuatum
                                               Equisetum elongatum var. boivini
                                               Equisetum elongatum var. boryanum
                                               Equisetum elongatum var. burchellii
                                               Equisetum elongatum var. capense
                                               Equisetum elongatum var. distortum
                                               Equisetum elongatum var. dolosum
                                               Equisetum elongatum var. dregeanum
                                               Equisetum elongatum var. elegans
                                               Equisetum elongatum var. flagelliferum
                                               Equisetum elongatum var. gracile
                                               Equisetum elongatum var. graecum
                                               Equisetum elongatum var. hispanicum
                                               Equisetum elongatum var. humile
                                               Equisetum elongatum var. iaponicum
                                               Equisetum elongatum var. incanum
                                               Equisetum elongatum var. lohseanum
                                               Equisetum elongatum var. malabaricum
                                               Equisetum elongatum var. nudum
                                               Equisetum elongatum var. ornatum
                                               Equisetum elongatum var. ramosissimum
                                               Equisetum elongatum var. scaberrimum
                                               Equisetum elongatum var. scabrum
                                               Equisetum elongatum var. simplex
                                               Equisetum elongatum var. sinaiticum
                                               Equisetum elongatum var. subverticillatum
                                               Equisetum elongatum var. tenuissimum
                                               Equisetum elongatum var. virgatum
                                             Equisetum ephedroides
                                             Equisetum ferrissii
                                             Equisetum fluviatile
                                                   [Equisetum fluviatile f. linnaenum]
                                                   [Equisetum fluviatile var. limosum]
                                                   [Equisetum limosum]
                                                   Equisetum fluviatile f. attenuatum
                                                   Equisetum fluviatile f. limosum
                                                   Equisetum fluviatile f. linnaeanum
                                                   Equisetum fluviatile f. minus
                                                   Equisetum fluviatile f. natans
                                                   Equisetum fluviatile f. polystachium
                                                   Equisetum fluviatile f. uliginosum
                                               Equisetum fluviatile subsp. limosum
                                               Equisetum fluviatile var. attenuatum
                                               Equisetum fluviatile var. brachycladon
                                               Equisetum fluviatile var. intermedium
                                               Equisetum fluviatile var. leptocladon
                                               Equisetum fluviatile var. linnaeanum
                                               Equisetum fluviatile var. siccum
                                               Equisetum fluviatile var. verticillatum
                                             Equisetum fusco-zonatum
                                             Equisetum giganteum
                                               Equisetum giganteum var. asperrimum
                                               Equisetum giganteum var. caracasanum
                                               Equisetum giganteum var. chilense
                                               Equisetum giganteum var. digitaliferum
                                             Equisetum heleocharis
                                                   Equisetum heleocharis f. attenuatum
                                                   Equisetum heleocharis f. brachycladon
                                                   Equisetum heleocharis f. commune
                                                   Equisetum heleocharis f. leptocladon
                                                   Equisetum heleocharis f. uliginosum
                                                   Equisetum heleocharis f. vulgare
                                               Equisetum heleocharis var. fluviatile
                                               Equisetum heleocharis var. limosum
                                             Equisetum hiemale
                                                   Equisetum hiemale f. minus
                                                   Equisetum hiemale f. ramigera
                                               Equisetum hiemale subsp. ramosum
                                               Equisetum hiemale subsp. sieboldii
                                               Equisetum hiemale subsp. variegatum
                                               Equisetum hiemale var. brevivaginatum
                                               Equisetum hiemale var. doellii
                                               Equisetum hiemale var. drummondi
                                               Equisetum hiemale var. elatius
                                               Equisetum hiemale var. herbaceum
                                               Equisetum hiemale var. japonicum
                                               Equisetum hiemale var. minus
                                               Equisetum hiemale var. occidentale
                                               Equisetum hiemale var. paleaceum
                                               Equisetum hiemale var. procerum
                                               Equisetum hiemale var. pumilum
                                               Equisetum hiemale var. rabenhorstii
                                               Equisetum hiemale var. ramigerum
                                               Equisetum hiemale var. schleicheri
                                               Equisetum hiemale var. subramosum
                                               Equisetum hiemale var. subverticillatum
                                               Equisetum hiemale var. tenellum
                                               Equisetum hiemale var. trachyodon
                                               Equisetum hiemale var. uliginosum
                                               Equisetum hiemale var. variegatum
                                               Equisetum hiemale var. vulgare
                                             Equisetum huegelii
                                               Equisetum huegelii var. majus
                                               Equisetum huegelii var. minus
                                             Equisetum humboldtii
                                             Equisetum hungaricum
                                             Equisetum hyemale
                                                   Equisetum hyemale f. herbaceum
                                                   Equisetum hyemale f. hondae
                                                   Equisetum hyemale f. moorei
                                                   Equisetum hyemale f. multirameum
                                                   Equisetum hyemale f. polystachyum
                                                   Equisetum hyemale f. proliferum
                                                   Equisetum hyemale f. pumilum
                                               Equisetum hyemale subsp. affine
                                                     [Equisetum hyemale var. affine]
                                                     [Equisetum hyemale var. californicum]
                                                     [Equisetum hyemale var. robustum]
                                                     [Hippochaete hyemalis var. affinis]
                                               Equisetum hyemale subsp. hyemale
                                               Equisetum hyemale subsp. moorei
                                               Equisetum hyemale subsp. trachyodon
                                               Equisetum hyemale subsp. variegatum
                                               Equisetum hyemale var. arenarium
                                               Equisetum hyemale var. californica
                                               Equisetum hyemale var. elongatum
                                               Equisetum hyemale var. gracile
                                               Equisetum hyemale var. hyemale
                                               Equisetum hyemale var. jesupii
                                               Equisetum hyemale var. mackayi
                                               Equisetum hyemale var. moorei
                                               Equisetum hyemale var. polystachyum
                                               Equisetum hyemale var. praealtum
                                               Equisetum hyemale var. pseudohyemale
                                               Equisetum hyemale var. ramosum
                                               Equisetum hyemale var. subverticillatum
                                               Equisetum hyemale var. suksdorfii
                                               Equisetum hyemale var. trachyodon
                                               Equisetum hyemale var. variegatum
                                               Equisetum hyemale var. virgatum
                                             Equisetum incanum
                                             Equisetum komarovii
                                             Equisetum laevigatum
                                                   [Equisetum fontinale]
                                                   [Equisetum funstonii]
                                                   [Equisetum kansanum]
                                                   [Equisetum laevigatum subsp. funstonii]
                                                   [Equisetum laevigatum var. funstonii]
                                                   [Hippochaete laevigata]
                                                   [Lastrea calcarata var. falciloba]
                                                   Equisetum laevigatum f. caespitosum
                                                   Equisetum laevigatum f. polystachum
                                                   Equisetum laevigatum f. proliferum
                                                   Equisetum laevigatum f. ramosum
                                                   Equisetum laevigatum f. scabrellum
                                                   Equisetum laevigatum f. variegatoides
                                               Equisetum laevigatum var. elatum
                                               Equisetum laevigatum var. scabrellum
                                             Equisetum laxum
                                             Equisetum lechleri
                                             Equisetum litorale
                                                   Equisetum litorale f. formosum
                                               Equisetum litorale var. arvensiforme
                                             Equisetum littorale
                                                   Equisetum littorale f. arvensiforme
                                             Equisetum mackaii
                                             Equisetum mackayi
                                             Equisetum macrostachyon
                                             Equisetum majus
                                               Equisetum majus var. serotinum
                                             Equisetum martii
                                               Equisetum martii var. minus
                                             Equisetum maximum
                                                   Equisetum maximum f. pluviale
                                                   Equisetum maximum f. serotinum
                                             Equisetum mekongense
                                             Equisetum meridionale
                                             Equisetum mexicanum
                                             Equisetum minus
                                             Equisetum montellii
                                             Equisetum moorei
                                             Equisetum multicaule
                                             Equisetum multiforme
                                               Equisetum multiforme var. campanulatum
                                               Equisetum multiforme var. paleaceum
                                               Equisetum multiforme var. ramosum
                                               Equisetum multiforme var. tenue
                                               Equisetum multiforme var. variegatum
                                             Equisetum myriochaetum
                                               Equisetum myriochaetum var. densum
                                               Equisetum myriochaetum var. laxum
                                             Equisetum nelsonii
                                             Equisetum nemorosum
                                             Equisetum occidentale
                                             Equisetum pallens
                                             Equisetum pallidum
                                             Equisetum palustre
                                                   [Equisetum palustre f. verticillatum]
                                                   [Equisetum palustre var. americanum]
                                                   [Equisetum palustre var. simplicissimum]
                                                   Equisetum palustre f. fallax
                                                   Equisetum palustre f. fluitans
                                                   Equisetum palustre f. luxurians
                                                   Equisetum palustre f. nigridens
                                                   Equisetum palustre f. nudum
                                                   Equisetum palustre f. prostratum
                                                   Equisetum palustre f. ramosissimum
                                                   Equisetum palustre f. tenue
                                               Equisetum palustre var. alpinum
                                               Equisetum palustre var. leptostachyum
                                               Equisetum palustre var. microstachyum
                                               Equisetum palustre var. monostachyon
                                               Equisetum palustre var. nigridens
                                               Equisetum palustre var. nudum
                                               Equisetum palustre var. paludosum
                                               Equisetum palustre var. polystachyon
                                               Equisetum palustre var. polystachyum
                                               Equisetum palustre var. prostratum
                                               Equisetum palustre var. szechuanense
                                               Equisetum palustre var. tenue
                                             Equisetum pannonicum
                                             Equisetum philippi
                                             Equisetum poeppigianum
                                             Equisetum polycladum
                                             Equisetum praealtum
                                                   [Equisetum hyemale var. herbaceum]
                                                   Equisetum praealtum f. drummondii
                                                   Equisetum praealtum f. neopolystachyum
                                                   Equisetum praealtum f. polystachyum
                                                   Equisetum praealtum f. pumilum
                                                   Equisetum praealtum f. ramosum
                                                   Equisetum praealtum f. texanum
                                               Equisetum praealtum var. affine
                                               Equisetum praealtum var. laevigatum
                                             Equisetum pratense
                                                   Equisetum pratense f. praecox
                                                   Equisetum pratense f. serotinum
                                               Equisetum pratense var. prostratum
                                             Equisetum procerum
                                             Equisetum pyramidale
                                             Equisetum ramosissimum
                                                   Equisetum ramosissimum f. debile
                                                   Equisetum ramosissimum f. muelleri
                                                   Equisetum ramosissimum f. sprucei
                                               Equisetum ramosissimum subsp. debile
                                               Equisetum ramosissimum subsp. incanum
                                               Equisetum ramosissimum subsp. moorei
                                               Equisetum ramosissimum subsp. paleaceum
                                               Equisetum ramosissimum subsp. ramosissimum
                                                     [Hippochaete ramosissima]
                                               Equisetum ramosissimum var. abyssinicum
                                               Equisetum ramosissimum var. affine
                                               Equisetum ramosissimum var. altissimum
                                               Equisetum ramosissimum var. annuliferum
                                               Equisetum ramosissimum var. arabicum
                                               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. elegans
                                               Equisetum ramosissimum var. fastigiatum
                                               Equisetum ramosissimum var. flagelliferum
                                               Equisetum ramosissimum var. gracile
                                               Equisetum ramosissimum var. hispanicum
                                               Equisetum ramosissimum var. humile
                                               Equisetum ramosissimum var. incanum
                                               Equisetum ramosissimum var. jacquemontii
                                               Equisetum ramosissimum var. japonicum
                                               Equisetum ramosissimum var. lohseanum
                                               Equisetum ramosissimum var. malabaricum
                                               Equisetum ramosissimum var. multicaule
                                               Equisetum ramosissimum var. natalense
                                               Equisetum ramosissimum var. nudum
                                               Equisetum ramosissimum var. orientale
                                               Equisetum ramosissimum var. ornatum
                                               Equisetum ramosissimum var. renati
                                               Equisetum ramosissimum var. scaberium
                                               Equisetum ramosissimum var. scabrum
                                               Equisetum ramosissimum var. schleicheri
                                               Equisetum ramosissimum var. simplex
                                               Equisetum ramosissimum var. sinaiticum
                                               Equisetum ramosissimum var. subverticillatum
                                               Equisetum ramosissimum var. virgatum
                                             Equisetum ramosum
                                               Equisetum ramosum subsp. paleaceum
                                               Equisetum ramosum var. major
                                               Equisetum ramosum var. paleaceum
                                             Equisetum reptans
                                               Equisetum reptans var. variegatum
                                             Equisetum rinihuense
                                             Equisetum robertsii
                                             Equisetum robustum
                                               Equisetum robustum var. affine
                                               Equisetum robustum var. drummondii
                                               Equisetum robustum var. minus
                                             Equisetum rothmaleri
                                             Equisetum samuelssonii
                                             Equisetum saxicola
                                             Equisetum scandens
                                             Equisetum schaffneri
                                             Equisetum schleicheri
                                             Equisetum scirpoides
                                               Equisetum scirpoides var. alpestre
                                               Equisetum scirpoides var. caespitosum
                                               Equisetum scirpoides var. elatum
                                               Equisetum scirpoides var. minus
                                               Equisetum scirpoides var. pedunculatum
                                               Equisetum scirpoides var. ramulosum
                                             Equisetum serotinum
                                             Equisetum setaceum
                                             Equisetum sieboldii
                                             Equisetum silvaticum
                                               Equisetum silvaticum var. squarrosum
                                             Equisetum stipulaceum
                                             Equisetum suecicum
                                             Equisetum sylvaticum
                                                   [Equisetum sylvaticum var. multiramosum]
                                                   [Equisetum sylvaticum var. pauciramosum]
                                                   Equisetum sylvaticum f. capillare
                                                   Equisetum sylvaticum f. multiramosum
                                                   Equisetum sylvaticum f. neoserotinum
                                                   Equisetum sylvaticum f. opsistachyum
                                                   Equisetum sylvaticum f. serum
                                                   Equisetum sylvaticum f. tardatum
                                               Equisetum sylvaticum var. sylvaticum
                                             Equisetum tarapacanum
                                             Equisetum telmateia
                                                   Equisetum telmateia f. breve
                                                   Equisetum telmateia f. conforme
                                                   Equisetum telmateia f. dactyloideum
                                                   Equisetum telmateia f. ramulosum
                                                   Equisetum telmateia f. vaucheri
                                               Equisetum telmateia subsp. braunii
                                                     [Equisetum telmateia var. braunii]
                                               Equisetum telmateia subsp. telmateia
                                                     [Equisetum telmateia var. telmateia]
                                               Equisetum telmateia var. conforme
                                               Equisetum telmateia var. hillii
                                               Equisetum telmateia var. pleiostachya
                                               Equisetum telmateia var. polystachyum
                                             Equisetum tenellum
                                             Equisetum tenue
                                             Equisetum thunbergii
                                             Equisetum timorianum
                                             Equisetum torgesianum
                                             Equisetum umbrosum
                                             Equisetum variegatum
                                                   Equisetum variegatum f. anceps
                                                   Equisetum variegatum f. caespitosum
                                                   Equisetum variegatum f. geminatum
                                                   Equisetum variegatum f. multirameum
                                                   Equisetum variegatum f. polystachyum
                                                   Equisetum variegatum f. tortuosum
                                                   Equisetum variegatum f. virgatum
                                               Equisetum variegatum subsp. alaskanum
                                                     [Equisetum variegatum var. alaskanum]
                                               Equisetum variegatum subsp. variegatum
                                                     [Equisetum variegatum var. anceps]
                                                     [Equisetum variegatum var. variegatum]
                                               Equisetum variegatum var. alpestre
                                               Equisetum variegatum var. anglicum
                                               Equisetum variegatum var. arenarium
                                               Equisetum variegatum var. caespitosum
                                               Equisetum variegatum var. concolor
                                               Equisetum variegatum var. continentale
                                               Equisetum variegatum var. elatum
                                               Equisetum variegatum var. huefleri
                                               Equisetum variegatum var. majus
                                               Equisetum variegatum var. meridionale
                                               Equisetum variegatum var. multirameum
                                               Equisetum variegatum var. reptans
                                               Equisetum variegatum var. serotinum
                                               Equisetum variegatum var. trachyodon
                                               Equisetum variegatum var. virgatum
                                               Equisetum variegatum var. wilsoni
                                             Equisetum virgatum
                                             Equisetum wallichianum
                                             Equisetum xylochaetum
                                             Equisetum zonatum
                                             Equisetum × alsaticum
                                             Equisetum × arcticum
                                             Equisetum × ascendens
                                             Equisetum × bowmanii
                                             Equisetum × dycei
                                             Equisetum × ferrissii
                                                   [Equisetum ferrissi]
                                                   [Equisetum hyemale var. elatum]
                                                   [Equisetum hyemale var. intermedium]
                                                   [Equisetum intermedium]
                                             Equisetum × font-queri
                                             Equisetum × geissertii
                                             Equisetum × haukeanum
                                             Equisetum × hybridum
                                             Equisetum × lapponicum
                                             Equisetum × litorale
                                             Equisetum × lofotense
                                             Equisetum × mackaii
                                                   [Equisetum trachyodon]
                                                   [Equisetum variegatum var. jesupii]
                                             Equisetum × mchaffieae
                                             Equisetum × meridionale
                                             Equisetum × mildeanum
                                             Equisetum × montellii
                                             Equisetum × moorei
                                             Equisetum × naegelianum
                                             Equisetum × nelsonii
                                                   [Equisetum nelsoni]
                                                   [Equisetum variegatum var. nelsonii]
                                             Equisetum × robertsii
                                             Equisetum × rothmaleri
                                             Equisetum × schaffneri
                                             Equisetum × sergijevskianum
                                             Equisetum × wilmottii
                                     Hippochaete
                                             Hippochaete alsatica
                                             Hippochaete debilis
                                             Hippochaete ferrissii
                                             Hippochaete fuchsii
                                             Hippochaete gigantea
                                             Hippochaete hyemalis
                                                   Hippochaete hyemalis f. affinis
                                                   Hippochaete hyemalis f. hondae
                                               Hippochaete hyemalis var. alaskana
                                               Hippochaete hyemalis var. californica
                                               Hippochaete hyemalis var. jesupii
                                             Hippochaete meridionalis
                                             Hippochaete moorei
                                             Hippochaete myriochaeta
                                             Hippochaete naegelianum
                                             Hippochaete nelsonii
                                             Hippochaete praealta
                                               Hippochaete praealta var. affinis
                                               Hippochaete praealta var. intermedia
                                               Hippochaete praealta var. pseudohyemalis
                                               Hippochaete praealta var. scabrella
                                               Hippochaete praealta var. suksdorfii
                                             Hippochaete ramosissimum
                                             Hippochaete samuelssonii
                                             Hippochaete schaffneri
                                             Hippochaete scirpoides
                                             Hippochaete trachyodon
                                             Hippochaete variegata
                                               Hippochaete variegata subsp. alaskana
                                               Hippochaete variegata var. anceps
                                               Hippochaete variegata var. jesupii
                                             Hippochaete variegatum

Problematic Rooting (198905)
                                                   Equisetum funstonii f. caespitosum
                                                   Equisetum funstonii f. nudum
                                                   Equisetum funstonii f. polystachyum
                                                   Equisetum funstonii f. ramosum
                                               Equisetum funstonii var. caespitosum
                                               Equisetum funstonii var. nudum
                                               Equisetum funstonii var. ramosum

Problematic Rooting (198909)
                                                   Equisetum kansanum f. caespiticum
                                                   Equisetum kansanum f. caespitosum
                                                   Equisetum kansanum f. eatonii
                                                   Equisetum kansanum f. elatum
                                                   Equisetum kansanum f. polystachyum
                                                   Equisetum kansanum f. ramosum
                                                   Equisetum kansanum f. variegatoides

Problematic Rooting (198911)
                                                   Equisetum limosum f. brachycladon
                                                   Equisetum limosum f. fluviatile
                                                   Equisetum limosum f. leptocladon
                                                   Equisetum limosum f. linnaeanum
                                                   Equisetum limosum f. minus
                                                   Equisetum limosum f. natans
                                               Equisetum limosum var. aphyllum
                                               Equisetum limosum var. attenuatum
                                               Equisetum limosum var. brachycladon
                                               Equisetum limosum var. candelabrum
                                               Equisetum limosum var. fluviatile
                                               Equisetum limosum var. leptocladon
                                               Equisetum limosum var. linnaeanum
                                               Equisetum limosum var. minus
                                               Equisetum limosum var. polystachyum
                                               Equisetum limosum var. ramosum
                                               Equisetum limosum var. simplicissimum
                                               Equisetum limosum var. sterile
                                               Equisetum limosum var. subramosum
                                               Equisetum limosum var. verticillatum

Problematic Rooting (198922)
                                                   Equisetum trachyodon f. fuchsii
                                                   Equisetum trachyodon f. geminatum
                                                   Equisetum trachyodon f. multirameum
                                               Equisetum trachyodon var. schleicheri

Problematic Rooting (199033)
                                               Hippochaete laevigata var. caespitica
                                               Hippochaete laevigata var. caespitosa
                                               Hippochaete laevigata var. eatonii
                                               Hippochaete laevigata var. funstonii
                                               Hippochaete laevigata var. polystachya
                                               Hippochaete laevigata var. ramosa
                                               Hippochaete laevigata var. variegatoides

Problematic Rooting (247394)
                                               Equisetum diffusum var. paucidentatum

Problematic Rooting (249160)
                                               Hippochaete ramosissima subsp. debilis
                                               Hippochaete ramosissima var. japonica