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
                             Infrakingdom Streptophyta Caval.-Sm. (1993)
                               Clade Phragmoplastophyta Lecointre & Le Guyader 2006 [Hall, McCourt, Delwiche, Mishler & Karol 2020]
                                 Phylum Charophytaᵀ Migula (1889) [monotypic]
                                   [Class Conjugatophyceae Engl. (1892), sedis mutabilis] see Class Zygnematophyceae Round ex Guiry (2013)
                                     Order Zygnematales [paraphyletic] - filamentous conjugates and saccoderm desmids
                                       Family Zygnemataceaeᵀ (Meneghini) Kützing (1843) [polyphyletic]
                                         01 Genus Transeauina Guiry (2013)
                                         01.0 [Genus Debarya Wittr. (1872), nom. illeg.] see Genus Transeauina Guiry (2013)
                                         01.0 [Genus Mougeotia de Bary (1858)] see Genus Debarya Wittr. (1872), nom. illeg.
                                         02 Genus Lloydina A. Ahmad & M. Goldstein (1972) [monotypic]
                                         02.0 [Genus Lloydiella A. Ahmad & M. Goldstein (1971)] see Genus Lloydina A. Ahmad & M. Goldstein (1972)
                                         02.0 [Genus "Lloydina" Ahmad & Goldstein (1971)] see Genus Lloydiella A. Ahmad & M. Goldstein (1971)
                                         03 Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Agardhia Gray (1821)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Agardia Gray (1821)] see Genus Agardhia Gray (1821)
                                         03.0 [Genus Craterospermum A.Braun (1855)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Genuflexa Link (1833)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Gonatonema Wittr. (1878)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Goniothrix J.E. Gray (1864)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Mesocarpus Hassall (1845)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Mougeotella Gaillon (1833)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Plagiospermum Cleve (1868)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Pleurocarpus A.Braun (1855)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Serpentinaria Gray (1821)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Sphaerocarpus Hassall (1843)] see Genus Mesocarpus Hassall (1845)
                                         03.0 [Genus Sphaerospermum Cleve (1868)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Staurocarpus Hassall (1843)] see Genus Mougeotia C.Agardh (1824), nom. cons.
                                         03.0 [Genus Staurospermum Kütz. (1843)] see Genus Staurocarpus Hassall (1843)
                                         04 Genus Mougeotiella Yamagishi (1963)
                                         05 Genus Mougeotiopsis Palla (1894) [monotypic]
                                         05.0 [Genus Mesogerron F. Brand (1899)] see Genus Mougeotiopsis Palla (1894)
                                         06 Genus Neozygnema Yamagishi (1963) [monotypic]
                                         07 Genus Sangirellum A.K. Mahato & P. Mahato (1994) [monotypic]
                                         08 Genus Sirocladium Randhawa (1941)
                                         09.1 Genus Spirogyra Link (1820), nom. cons.
                                         09.1.0 [Genus Conjugata Vaucher (1803)] see Genus Spirogyra Link (1820), nom. cons.
                                         09.1.0 [Genus Jugalis Schrank (1814), nom. illeg.] see Genus Spirogyra Link (1820), nom. cons.
                                         09.1.0 [Genus Salmacis Bory (1822)] see Genus Spirogyra Link (1820), nom. cons.
                                         09.1.0 [Genus Salmacisella Gaillon (1833)] see Genus Spirogyra Link (1820), nom. cons.
                                         09.2 Genus Sirogonium Kütz. (1843), nom. cons.
                                         09.2.0 [Genus "Choapes" Guiry (2013), orth. inval.] see Genus Choaspes Gray (1821), orth. inval.
                                         09.2.0 [Genus "Choapis" Guiry (2013), orth. inval.] see Genus Choaspis Gray (1821)
                                         09.2.0 [Genus "Choaspes" Gray (1821), orth. inval.] see Genus Choaspis Gray (1821)
                                         09.2.0 [Genus Choaspis Gray (1821)] see Genus Sirogonium Kütz. (1843), nom. cons.
                                         10 Genus Temnogametum West & G.S.West (1897)
                                         11 Genus Temnogyra I.F. Lewis (1925)
                                         12 Genus Trigonum A.K. Mahato & P. Mahato (1994) [monotypic]
                                         13.1 Genus Zygnemaᵀ C.Agardh (1817), nom. cons.
                                         13.1.0 [Genus Globulina Link (1820)] see Genus Zygnema C.Agardh (1817), nom. cons.
                                         13.1.0 [Genus Lucernaria Roussel (1806)] see Genus Zygnema C.Agardh (1817), nom. cons.
                                         13.1.0 [Genus Rhynchonema Kütz. (1849)] see Genus Zygnema C.Agardh (1817), nom. cons.
                                         13.1.0 [Genus Stellulina Link (1833)] see Genus Zygnema C.Agardh (1817), nom. cons.
                                         13.1.0 [Genus Tendaridea Bory (1822)] see Genus Tyndaridea Harvey
                                         13.1.0 [Genus Tendaridella Gaillon (1833)] see Genus Zygnema C.Agardh (1817), nom. cons.
                                         13.1.0 [Genus Thwaitesia Mont. (1845)] see Genus Zygnema C.Agardh (1817), nom. cons.
                                         13.1.0 [Genus Tyndaridea Harvey] see Genus Zygnema C.Agardh (1817), nom. cons.
                                         13.2 Genus Pleurodiscus Lagerh. (1895)
                                         14 Genus Zygnemopsis (Skuja) Transeau (1934)
                                         14.0 [Genus Hallasia Rosenvinge (1924)]
                                         15 Genus Zygogonium Kütz. (1843), nom. cons.