Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Hamamelididae Takht. (1967)
       Superorder Faganae Takht. (1997) see Order Fagales Engl. (1892)
         Order Fagales Engl. (1892)
           Family Fagaceae Dumort. (1829), nom. cons. - beech family
             Subfamily Trigonobalanoideae see Subfamily Quercoideae
               1 Genus Trigonobalanus Forman (1962)
               1.0.1 Genus Colombobalanus see Genus Trigonobalanus Forman (1962)
               1.0.2 Genus Formanodendron see Genus Trigonobalanus Forman (1962)