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 Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Harosa Cavalier-Smith, 2010
                             [crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Infrakingdom Halvaria Cavalier-Smith, 2010
                                 Superphylum Heterokonta Caval.-Sm. (1986)
                                   Phylum Ochrophyta Caval.-Sm. (1995)
                                     Subphylum Khakista Caval.-Sm. (2000)
                                       Diatomea Kütz. (1844)
                                         Class Bacillariophyceae Haeckel (1878) - pennates
                                           Subclass Fragilariophycidae Round (1990) - core araphid diatoms
                                             Order Fragilarialesᵀ P.C.Silva (1962) [monotypic]
                                               Family Fragilariaceaeᵀ Grev. (1833)
                                                 Genus Synedra Ehrenb. (1830)
                                                   [Synedra actinastroides Lemm.] see Nitzschia fruticosa Hustedt (1957)
                                                   Synedra acus Kützing (1844)
                                                   [Synedra affinis Kützing (1844)] see Fragilaria fasciculata (C.Agardh) Lange-Bertalot
                                                   Synedra bacillaris (Grunow) Hustedt (1932)
                                                   Synedra baculus Gregory (1857)
                                                   [Synedra barbatula Kützing (1844)] see Tabularia barbatula (Kützing, 1844) D.M. Williams & Round (1986)
                                                   [Synedra berolinensis Lemmermann (1900)] see Staurosirella berolinensis (Lemmermann, 1900) L. Bukhtiyarova (1995)
                                                   [Synedra closterioides Grunow, in Van Heurck (1881)] see Psammosynedra closterioides (Grunow, in Van Heurck, 1881) F.E. Round
                                                   Synedra crystallina (Agardh) Kützing (1844)
                                                   Synedra delicatissima W.Sm. (1853)
                                                   [Synedra fasciculata (C.Agardh) Kützing (1844)] see Tabularia fasciculata (C.Agardh) D.M. Williams & Round (1986)
                                                   [Synedra fulgens (Grev.) W.Sm. (1853)] see Ardissonea fulgens (Grev.) Grunow, in Cleve & Grunow (1880)
                                                   [Synedra gaillonii (Bory, 1827) Ehrenberg (1830)] see Catacombas gaillonii (Bory, 1827) Williams & Round (1986)
                                                   Synedra gracilis Kützing (1844)
                                                   Synedra hennedyana Gregory
                                                   [Synedra hyperborea Grunow (1884)] see Synedropsis hyperborea (Grunow, 1884) G.R. Hasle, L.K. Medlin & E.E. Syvertsen (1994)
                                                   Synedra laevigata Grunow
                                                   [Synedra mazamaensis Sovereign (1958)] see Fragilaria mazamaensis (Sovereign, 1958) Lange-Bertalot (1980)
                                                   [Synedra minuscula Grunow, in Van Heurck (1881)] see Fragilaria famelica
                                                   Synedra nana Meister (1912)
                                                   Synedra parasitica (W.Sm.) Hustedt
                                                   [Synedra pulchella (Ralfs ex Kützing) Kützing (1844)] see Ctenophora pulchella (Ralfs ex Kützing) D.M. Williams & Round
                                                   Synedra robusta Ralfs, in A. Pritchard (1861)
                                                   Synedra rumpens H.H. Chase
                                                   Synedra superba Kützing
                                                   [Synedra tabulata (C.Agardh) Kützing (1844)] see Fragilaria fasciculata (C.Agardh) Lange-Bertalot
                                                   [Synedra tenera W.Sm. (1856)] see Fragilaria tenera (W.Sm., 1856) Lange-Bertalot (1980)
                                                   Synedra tenuissima (Kützing) Kützing (1844)
                                                   [Synedra ulna (Nitzsch) Ehrenberg (1836)] see Fragilaria ulna (Nitzsch) Lang.-Bert.
                                                   Synedra undulata (J.W. Bailey) Gregory
                                                   [Synedra vaucheriae (Kützing) Kützing (1844)] see Fragilaria capucina var. vaucheriae (Kützing) Lange-Bertalot (1980)