Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         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)
                               Phylum Mesostigmatophyta Doweld (2001) [monotypic]
                                 Class Mesostigmatophyceaeᵀ B.Marin & M. Melkonian (1999) [monotypic] - mesostigmatophytes
                                   Order Mesostigmatalesᵀ T. Cavalier-Sm. (1998) [monotypic]
                                     Family Mesostigmataceaeᵀ Fott ex Moestrup & Throndsen [monotypic]
                                       Genus Mesostigmaᵀ Lauterborn (1894)
                                         1 Mesostigma grande O.A. Korshikov (1938)
                                         2 Mesostigma virideᵀ Lauterborn (1894)