living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Chromophycota see Phylum Chromophyta T.A.Chr. (1962), nom. nud.
           Class Xanthophyceae P. Allorge ex Fritsch (1935) - yellow-green algae
             Order Tribonematales Pascher (1939)
               Family Tribonemataceae
                 1 Genus Brachynema Bentham (1857), nom. cons.
                 2 Genus Heterotrichella H. Reisigl (1964)
                 3 Genus Heterothrix Pascher (1932), nom. illeg. see Genus Xanthonema Silva (1979)
                 4 Genus Bumilleria A. Borzí (1889)
                 5 Genus Tribonema Derbès & Solier (1851)