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
                           Clade Rhodaria Cavalier-Smith 2021
                             Subkingdom Rhodoplantae G.W.Saunders & Hommers. (2004) [monotypic]
                               Phylum Rhodophyta Wettst. (1901) - red algae
                                 Subphylum Eurhodophytina G.W.Saunders & Hommers. (2004)
                                   Class Florideophyceae Cronquist (1960)
                                     Subclass Rhodymeniophycidae G.W.Saunders & Hommers. (2004)
                                       Order Peyssonneliales Krayesky, Fredericq & J.N.Norris
                                         Family Peyssonneliaceaeᵀ Denizot (1968)
                                           Genus Cruoriella P.L. Crouan & H.M. Crouan (1859)
                                           ?Genus Ethelia Weber-van Bosse (1921)
                                           1 Genus Metapeyssonnelia C.F. Boudouresque, E. Coppejans & J. Marcot (1976)
                                           2 Genus Peyssonneliaᵀ J. Decaisne (1841)
                                           3 Genus Polystrata Heydrich (1905)