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 Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Harosa Cavalier-Smith, 2010
                             [crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Infrakingdom Halvaria Cavalier-Smith, 2010
                                 Superphylum Heterokonta Caval.-Sm. (1986)
                                   Phylum Ochrophyta Caval.-Sm. (1995)
                                     Subphylum Phaeista Caval.-Sm. (1995)
                                       Infraphylum Marista Caval.-Sm. (2006)
                                         Superclass Fucistia Caval.-Sm. (1995)
                                           Class Phaeophyceae Hansgirg (1886) - brown algae
                                             Order Scytosiphonales
                                               Family Scytosiphonaceaeᵀ Farlow (1881)
                                                 Genus Colpomenia (Endl.) Derbès & Solier, in Castagne (1851)
                                                 Genus Compsonema P. Kuckuck (1899)
                                                 Genus Endarachne J.Agardh (1896)
                                                 Genus Hydroclathrus Bory (1825)
                                                 Genus Iyengaria F. Børgesen (1939)
                                                 Genus Nemoderma Schousboe ex Bornet (1892)
                                                 Genus Petalonia Derbès & Solier (1850), nom. cons.
                                                 Genus Rosenvingea Boergesen (1914)
                                                 Genus Scytosiphonᵀ C.Agardh (1820), nom. cons.
                                                 ?Genus Utriculidium Skottsberg (1907)