embryophytes - land plants see Superphylum Embryophyta Engl. (1887)
   angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967)
     monocots see Clade Monocotyledoneae de Candolle 1817 [Judd, Soltis, Soltis & Graham 2020]
       Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
         Family Posidoniaceae Vines (1895), nom. cons.