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 discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         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 Polypodiidaeᵀ Cronquist, Takht. & Zimmerm. (1966)
                                                   Order Salviniales Link (1833) - water ferns
                                                     Family Marsileaceae Mirb. (1802) - clover ferns
                                                       1 Genus †Regnellites T.Yamada & M.Kato (2002)
                                                       2 Genus †Rodeites Sahni (1943)
                                                       3 Genus Marsileaᵀ L. (1753)
                                                       4 Genus Pilularia L. (1753)
                                                       5 Genus Regnellidium Lindm. (1904)