Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Liliopsida Batsch (1802) see Class Magnoliopsida Brongn. (1843)
     Subclass Commelinidae Takht. (1967) see Order Commelinales Mirb. ex Bercht. & J.Presl (1820)
       Superorder Hydatellanae Takht. ex Reveal (1992) see Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820)
         Order Hydatellales Cronquist (1980) see Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820)
           1 Family Hydatellaceae U.Hamann (1976)