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 Trochodendrales Takht. ex Cronquist (1981) Family Tetracentraceae A.C.Sm. (1945), nom. cons. - Tetracentron family see Family Trochodendraceae Eichler (1865), nom. cons. 1 Genus Tetracentron Oliv. (1889)