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 Hydrastidales Takht. (1997) see Order Ranunculales Juss. ex Bercht. & J.Presl (1820) Family Hydrastidaceae Martynov (1820) see Subfamily Hydrastidoideae Raf. Genus Hydrastis J. Ellis ex L. (1759)