Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Ranunculidae Takht. ex Reveal (1992) see Order Ranunculales Juss. ex Bercht. & J.Presl (1820)
       Superorder Ranunculanae Takht. ex Reveal (1992)
         Order Papaverales Dumort. (1829) see Order Ranunculales Juss. ex Bercht. & J.Presl (1820)
           Family Hypecoaceae Willk. & Lange (1880) see Tribe Hypecoeae Dumort. (1827)
             1 Genus Hypecoum L. (1753) - St. John's worts