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
               [Algae]
                 [Genus Catenaria Roussel (1806), nom. rej., incertae sedis]
                 [Genus Globulina Turpin (1827), nom. illeg., incertae sedis] see Genus Phytoconis Bory (1797), nom. rej. prop.
                 [Genus Hassallia Trevis. (1848)]
                 [Class Isocarpeae]
                 [Genus Lemania Bory (1824)]
                 [Genus Marssoniella Lemmerm. (1900)]
                 Genus Nematonostoc Nyl. ex Elenkin (1934)
                 [Genus Phlyctis Raf. (1810), nom. rej.]
                 [Genus Phytoconis Bory (1797), nom. rej. prop., incertae sedis] see Genus Lichenomphalia Redhead, Lutzoni, Moncalvo & Vilgalys (2002)
                 Genus Sirosiphon Kütz. (1843)
                 ?[Genus Syncoelium Wallr. (1833)]
                 ?Genus Torulopsidosira Geitler (1955)
                 01 [Genus †Algacites Schloth. (1825), incertae sedis]
                 2 [Division Prochlorophyta R.A. Lewin (1976)] see Phylum Prochlorophyta (Lewin 1976)
                 6 [Division Chlorarachniophyta D.J. Hibberd & R.E.Norris (1984)]
                 nd [Genus Amphiconium Nees (1816), nom. dub., incertae sedis] see Genus Trentepohlia Mart. (1817), nom. cons.
                 nd [Genus Chionaster Wille (1903), nom. dub., incertae sedis]
                 nd ?[Genus Chlamydotomus Trevis. (1879), nom. dub.]
                 nd [Genus Eomyces F. Ludw. (1894), nom. dub., incertae sedis]