Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct. Class Magnoliopsida Brongn. (1843) Subclass Hamamelididae Takht. (1967) Superorder Trochodendranae Takht. ex Reveal (1996) Order Cercidiphyllales Hu ex Reveal (1993) see Order Saxifragales Bercht. & J.Presl (1820) 1 Family Cercidiphyllaceae Engl. (1907), nom. cons. - katsura-tree family