Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         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 Dasycladales Pascher (1931)
                                     Family Polyphysaceae Kützing
                                       Genus Acetabularia J.V. Lamour. (1812)
                                         Acetabularia acetabulum (L.) P.C.Silva (1952)
                                         Acetabularia calyculus J.V. Lamour. (1824)
                                         [Acetabularia clavata Yamada] see Polyphysa clavata (Yamada) Schnetter & Bula-Mayer
                                         Acetabularia crenulata J.V.Lamour.
                                         Acetabularia dentata Solms-Laubach
                                         [Acetabularia exigua Solms-Laubach] see Polyphysa exigua (Solms-Laubach) S. Berger & M.J. Kaever
                                         Acetabularia farlowii Solms-Laubach
                                         Acetabularia kilneri J.Agardh
                                         Acetabularia major G. Martens
                                         [Acetabularia mediterranea J.V.Lamour.] see Acetabularia acetabulum (L.) P.C.Silva (1952)
                                         Acetabularia parvula Solms-Laubach (1895)
                                         [Acetabularia peniculus (R.Br. ex Turner) Solms-Laubach] see Polyphysa peniculus (R.Br. ex Turner) C.Agardh
                                         Acetabularia polyphysoides P.L. Crouan & H.M. Crouan
                                         [Acetabularia pusilla (M.A. Howe) F.S. Collins] see Polyphysa pusilla
                                         Acetabularia ryukyuensis Okamura & Yamada ex Okamura