Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Nymphaeidae J.W. Walker ex Takht. (1997) see Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820)
       Superorder Nymphaeanae Thorne ex Reveal (1992)
         Order Nymphaeales Salisb. ex Bercht. & J.Presl (1820)
           Family Nymphaeaceae Salisb. (1805), nom. cons. - water lilies
             Subfamily Nymphaeoideae Arn.
               Tribe Nymphaeeae DC. (1821) see Subfamily Nymphaeoideae Arn.
                 Genus Nymphaea L. (1753) - water lilies