Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Dilleniidae Takht. ex Reveal & Tahkt. (1993) see Order Dilleniales DC. ex Bercht. & J.Presl (1820)
       Superorder Theanae R.Dahlgren ex Reveal (1993) see Order Ericales Bercht. & J.Presl (1820)
         Order Lecythidales Cronquist (1957) see Order Ericales Bercht. & J.Presl (1820)
           Family Lecythidaceae A.Rich. (1825), nom. cons. - Brazil-nut family
             Tribe Griadeae Pichon (1946)
               1 Genus Gustavia L. (1775)
               2 Genus Grias L. (1759)