Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Rosidae Takht. (1967) see Superorder Rosanae Takht. (1967)
       Superorder Geranianae Takht. (1997), nom. inval. see Order Geraniales Juss. ex Bercht. & J.Presl (1820)
         Order Vochysiales Dumort. (1829) see Order Myrtales Juss. ex Bercht. & J.Presl (1820)
           Family Trigoniaceae A.Juss. (1849), nom. cons. - Trigonia family
             1 Genus Trigoniastrum Miquel (1861), nom. cons.
             2 Genus Trigonia Aubl. (1775)
             3 Genus Trigoniodendron E.F. Guimarães & J.R. Miguel (1987)
             4 Genus Humbertiodendron Leandri (1949)