Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Lamiidae Takht. ex Reveal (1993) see [unranked] lamiids
       Superorder Gentiananae Thorne ex Reveal (1992) see Order Gentianales Juss. ex Bercht. & J.Presl (1820)
         Order Gentianales Juss. ex Bercht. & J.Presl (1820)
           Family Loganiaceae R.Br. ex Mart. (1827), nom. cons. - butterfly-bush family
             1 Genus Logania R.Br. (1810), nom. cons.