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 neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
                 Clade neozoa Cavalier-Smith 1993
                   Superkingdom Corticata Lankester, 1878
                     Kingdom Chromista Caval.-Sm. (1981) - chromists
                       Subkingdom Harosa Cavalier-Smith, 2010
                         Infrakingdom Halvaria Cavalier-Smith, 2010
                           Superphylum Heterokonta Caval.-Sm. (1981)
                             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
                                       01 Order Ectocarpales Bessey (1907)
                                       02.1 Order Chordariales
                                       02.2 Order Ishigeales Cho, Lee & Boo (2004)
                                       02.3 Order Scytothamnales Peters & Clayton (1998)
                                       03 Order Cutleriales Bessey (1907)
                                       04 Order Tilopteridales Bessey (1907)
                                       05.1 Order Sphacelariales Migula (1908)
                                       05.2 Order Syringodermatales Henry (1984)
                                       06 Order Dictyotales Bory de Saint-Vincent (1828)
                                       07 Order Sporochnales Sauvageau (1926)
                                       08 Order Desmarestiales Setchell & Gardner (1925)
                                       09 Order Dictyosiphonales
                                       10 Order Scytosiphonales
                                       11 Order Laminariales Migula (1908)
                                       12 Order Fucales Kylin
                                       13 Order Durvillaeales J. Petrov (1965)
                                       14 Order Ascoseirales Petrov (1964) [monotypic]