[plants] Haeckel (1866) - plants
   vascular plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
     euphyllophytes see Clade Euphyllophyta Lecointre & Le Guyader 2006 [Cantino & Donoghue 2020]
       Spermatophyta Britton & Brown 1896 [Crane & Kenrick 1997], nom. cl. inval. - seed plants see Clade Spermatophyta Britton & Brown 1896 [Cantino, Doyle & Donoghue 2020]
         Class Magnoliopsida Brongn. (1843)
           "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]
               Asteridae Takht. (1967) see Superorder Asteranae Takht. (1967)
                 Lamiids see Clade Lamiidae Takhtajan 1987 [Olmstead, Judd & Cantino 2020]
                   Order Gentianales Juss. ex Bercht. & J.Presl (1820)
                     Family Apocynaceae Juss. (1789), nom. cons. - dogbane family
                       Subfamily Asclepiadoideae Burnett
                         Tribe Ceropegieae Orb. (1843)
                           1 Genus Brachystelma R.Br. (1822), nom. cons.
                           2 Genus Caralluma R.Br. (1810)
                           3 Genus Ceropegia L. (1753)
                           4 Genus Hoodia Sweet ex Decaisne, in A.DC. (1844)
                           5 Genus Huernia R.Br. (1810)
                           5.0 Genus "Hiernia" nom. null. see Genus Huernia R.Br. (1810)
                           6 Genus Leptadenia R.Br. (1810)
                           7.1 Genus Stapelia L. (1753)
                           7.2 Genus Orbea Haw. (1812)