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 Ranunculales Juss. ex Bercht. & J.Presl (1820)
           Family Ranunculaceae Juss. (1789), nom. cons. - buttercup family
             Subfamily Ranunculoideae Arn.
               Tribe Ranunculeae
                 Genus Cyrtorhyncha Nutt. ex Torr. & A.Gray