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 Gentianaceae Juss. (1789), nom. cons. - gentian family
             Tribe Gentianeae Dumort. (1829)
               01 Genus Gentiana L. (1753)
               02 Genus Gentianella Moench (1794)
               03 Genus Tripterospermum Blume (1826)
               04 Genus Jaeschkea Kurz (1870)
               05 Genus Ixanthus Grisebach (1838)
               06 Genus Lomatogonium A.Braun (1830)
               07 Genus Swertia L. (1753)
               08 Genus Halenia Borkhausen (1796), nom. cons.
               09 Genus Bartonia H.L. Muhlenberg ex Willd. (1801), nom. cons.
               10 Genus Obolaria L. (1753)
               11 Genus Faroa Welwitsch (1869)
               12 Genus Cicendia Adans. (1763)
               13 Genus Exaculum Caruel, in Parlatore (1886)
               14 Genus Centaurium Hill (1756)
               15 Genus Sabatia Adans. (1763)
               16 Genus Blackstonia Huds. (1762)
               17 Genus Canscora Lam. (1785)
               18 Genus Exacum L. (1753)
               19 Genus Cotylanthera Blume (1825)
               20 Genus Sebaea Solander ex R.Br. (1810)
               21 Genus Chironia L. (1753)