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
                                   "Ulvales-Ulotrichales"
                                     Order Ulotrichales Borzi
                                       Family Ulotrichaceaeᵀ Kützing
                                         Genus Acrosiphonia J.Agardh (1846)
                                           Acrosiphonia arcta (Dillwyn) Gain (1912)
                                           Acrosiphonia arctiuscula (Kützing) Jónsson
                                           Acrosiphonia coalita (Ruprecht) Scagel, Garbary, Golden & Hawkes
                                           Acrosiphonia effusua Kjellman
                                           Acrosiphonia flagellata Kjellman
                                           Acrosiphonia grandis Kjelmann (1893)
                                           Acrosiphonia hemisphaerica Kjellman
                                           Acrosiphonia incurva Kjellman
                                           Acrosiphonia sonderi (Kützing) Kornmann (1962)
                                           Acrosiphonia spinescens (Kützing) Kjellmann (1883)