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
                                       Genus Udoteaᵀ J.V.F. Lamouroux (1812)
                                         Udotea cyathiformis Decaisne
                                           1 Udotea cyathiformis f. infundibulum (J.Agardh) D.S. Littler & M.M. Littler (1990)
                                           2 Udotea cyathiformis f. sublittoralis (W.R. Taylor, 1928) D.S. Littler & M.M. Littler (1990)
                                           3 Udotea cyathiformis var. flabellifolia D.S. Littler & M.M. Littler (1990)