Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
       Subkingdom Pteridobiotina Britton & A. Br. (1896)
         Superphylum Cycadophytanae Doweld (2001)
           Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
             Subphylum Magnoliophytina 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)
                   Superorder Zosteranae Doweld (2001)
                     05 Order Aponogetonales Hutch. (1934) [monotypic] see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
                     06 Order Juncaginales Hutch. (1934) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
                     07 Order Potamogetonales Dumort. (1829) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
                     08 Order Posidoniales Nakai (1943) [monotypic] see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
                     09 Order Cymodoceales Nakai (1943) see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)
                     10 Order Zosterales Nakai (1943) [monotypic] see Order Alismatales R.Br. ex Bercht. & J.Presl (1820)