Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade "neomura" Cavalier-Smith 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
                 Clade neozoa Cavalier-Smith 1993
                   Superkingdom Corticata Lankester, 1878
                     Kingdom Plantae Haeckel (1866) - plants
                       Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants
                         Infrakingdom Streptophyta Caval.-Sm. (1993)
                           [crown] Clade Phragmoplastophyta Lecointre & Le Guyader 2006 [Hall, McCourt, Delwiche, Mishler & Karol 2020]
                             [crown] Clade Embryophytaᵀ Engler 1887 [Mishler & Qiu 2020]
                               Clade Pan-Tracheophytaᵀ Cantino & Donoghue 2007 [Cantino & Donoghue 2020]
                                 Clade Apo-Tracheophytaᵀ Cantino & Donoghue 2007 [Cantino & Donoghue 2020]
                                   [crown] Phylum Tracheophytaᵀ Sinnott ex Caval.-Sm. (1998) - vascular plants
                                     Clade Pan-Euphyllophytaᵀ Cantino & Donoghue 2007 [Cantino & Donoghue 2020]
                                       [crown] Clade Euphyllophytaᵀ Lecointre & Le Guyader 2006 [Cantino & Donoghue 2020]
                                         Subphylum Polypodiophytinaᵀ Reveal (1996) [monotypic]
                                           Class Polypodiopsidaᵀ Cronquist, Takht. & Zimmerm. (1966) - ferns
                                             Subclass Equisetidae Warm. (1883)
                                               Order Equisetalesᵀ DC. ex Bercht. & J.Presl (1829)
                                                 Family Equisetaceaeᵀ Michx. ex DC. (1804) - horsetails
                                                   Genus Equisetumᵀ L. (1753)
                                                     Equisetum arvense L. - field horsetail
                                                     Equisetum fluviatile L. (1753) - water horsetail
                                                     Equisetum giganteum L. (1759)
                                                     Equisetum hyemale L. - horsetail
                                                     Equisetum ×litorale Kühlew. ex Rupr. (pro sp.)
                                                     Equisetum ×moorei Newman
                                                     Equisetum myriochaetum Schltdl. & Cham. (1830)
                                                     Equisetum palustre L. - marsh horsetail
                                                     Equisetum ramosissimum Desf. - branched scouringrush
                                                     Equisetum schaffneri Milde (1861)
                                                     Equisetum scirpoides Michx. (1803) - dwarf scouringrush
                                                     Equisetum sylvaticum L. - woodland horsetail
                                                     Equisetum telmateia Ehrh. (1783) - giant horsetail
                                                     Equisetum ×trachyodon A.Braun
                                                     Equisetum variegatum Weber - variegated horsetail
                                                     1 Subgenus Equisetum subg. Equisetumᵀ
                                                     2 Subgenus Equisetum subg. Hippochaete