Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Liliopsida Batsch (1802) see Class Magnoliopsida Brongn. (1843)
     Subclass Liliidae J.H.Schaffn. (1911) see Order Liliales Perleb (1826)
       Superorder Lilianae Takht. (1967) - monocots
         Order Orchidales Raf. (1815) see Order Asparagales Link (1829)
           Family Orchidaceae Juss. (1789), nom. cons. - orchid family
             Subfamily Neottioideae see Tribe Neottieae Lindl. (1826)
               Tribe Epipactideae Endl. (1830) see Tribe Neottieae Lindl. (1826)
                 Genus Cephalanthera Rich. (1818)