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 Embryobionta Cronquist, Takht. & W.Zimm.
         Division Magnoliophyta Cronquist, Takht. & Zimmerm. (1966) see Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996)
           Class Liliopsida Batsch (1802) see Class Magnoliopsida Brongn. (1843)
             Subclass Alismatidae Takht. (1967) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
               Order Najadales Bercht. & J.Presl (1820) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
                 Family Juncaginaceae Rich. (1808), nom. cons. - arrow-grass family
                   1 Genus Lilaea Bonpl., in Humb. & Bonpl. (1808)
                   2 Genus Tetroncium Willd. (1808)
                   3 Genus Maundia F.Muell. (1858)
                   4 Genus Cycnogeton Endl. (1838) see Genus Triglochin L. (1753)
                   5 Genus Triglochin L. (1753)