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
                                 [Class Rhodophyceaeᵀ Thuret (1855) - red algae] see Phylum Rhodophyta Wettst. (1901)
                                   [Subclass Archaeorhodophycidae Magne (1989)] see Class Rhodellophyceae Caval.-Sm. (1998)
                                   Subclass Eurhodophycidae Magne (1989)
                                   Genus Gracilariocolax Weber-van Bosse (1928)
                                   [Subclass Metarhodophycidae Magne (1989)] see Subphylum Metarhodophytina G.W.Saunders & Hommers. (2004)
                                   Genus Perinema Weber-van Bosse (1911)
                                   Genus Rhodochortonopsis Yamada (1944)
                                   Genus Rhododiplobia Kirkpatrick (1912)
                                   †"solenoporaceans"
                                   [Order Sphaerococcales]
                                   1 [Subclass Bangiophycidae] see Class Bangiophyceae Wettst. (1901)
                                   1 [Subclass Bangiophycideae] see Class Bangiophyceae Wettst. (1901)
                                   1.0 [Subclass Bangiales F.Schmitz [monotypic]]
                                   2 [Subclass Florideophycidae] see Class Florideophyceae Cronquist (1960)
                                   2 [Subclass Florideophycideae] see Class Florideophyceae Cronquist (1960)
                                   2.0 [Subclass Florideae]
                                   x [Family †Ungdarellaceae Maslov (1956), incertae sedis] see Family Ungdarellidae