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 Cypripedioideae
               1 Genus Cypripedium L. (1753)
               2 Genus Paphiopedilum Pfitzer (1886), nom. cons.
               3 Genus Phragmipedium Rolfe (1896)
               4 Genus Selenipedium Rchb. f. (1854)