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
                           Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants
                             Phylum Chlorophyta Pascher (1914) [coordinate rank] - green algae
                               "core chlorophytes"
                                 Class Ulvophyceae K.R. Mattox & K.D. Stewart (1984) - ulvophytes
                                   Order Bryopsidales J.H.Schaffn. (1922)
                                     Family Udoteaceae J.Agardh
                                       01 Genus Avrainvillea M.J. Decne. (1842)
                                       02 Genus Boodleopsis A.Gepp & E.S. Gepp (1911)
                                       03 Genus Botryodesmis Kraft [monotypic]
                                       04 Genus Chlorodesmis Harvey & Bailey (1851)
                                       05 Genus Cladocephalus M.A. Howe (1905)
                                       06 Genus Flabellia Rchb. (1841)
                                       07 Genus Penicillus J.B. de Lam. (1813)
                                       08 Genus Poropsis Kützing [monotypic]
                                       09 Genus Pseudochlorodesmis F. Børgesen (1925)
                                       10 Genus Pseudopenicillus O. Dragastan et al. [monotypic]
                                       11 Genus Rhipidosiphon Mont. (1842)
                                       12 Genus Rhipilia F.T. Kützing (1858)
                                       13 Genus Rhipiliella Kraft (1986) [monotypic]
                                       14 Genus Rhipiliopsis A.Gepp & E.S. Gepp (1911)
                                       15 Genus Rhipocephalus F.T. Kützing (1843)
                                       16 Genus Siphonogramen I.A.Abbott & Huisman
                                       17 Genus Tydemania Weber-van Bosse (1901) [monotypic]
                                       18 Genus Udoteaᵀ J.V.F. Lamouroux (1812)