angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967)
   eudicots see Clade Eudicotyledoneae Donoghue, Doyle & Cantino 2007 [Donoghue, Doyle & Cantino 2020]
     core eudicots see Clade Gunneridae Soltis, Soltis & Judd 2007 [Soltis, Soltis & Judd 2020]
       asterids see Clade Asteridae Takhtajan 1967 [Olmstead & Judd 2020]
         euasterids I see [unranked] lamiids
           Order Gentianales Juss. ex Bercht. & J.Presl (1820)
             1 Family Apocynaceae Juss. (1789), nom. cons. - dogbane family
             2 Family Gelsemiaceae Struwe & V.A.Albert (1995)
             3 Family Gentianaceae Juss. (1789), nom. cons. - gentian family
             4 Family Loganiaceae R.Br. ex Mart. (1827), nom. cons. - butterfly-bush family
             5 Family Rubiaceae Juss. (1789), nom. cons. - coffee family