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 Dioscoreanae Takht. (1997), nom. inval. see Superorder Dioscoreanae Takht. ex Reveal & Doweld (1999)
         Order Stemonales Takht. (1995), nom. inval. see Order Stemonales Takht. ex Doweld (2001)
           Family Pentastemonaceae Duyfjes (1992) see Family Stemonaceae Caruel (1878), nom. cons.
             1 Genus Pentastemona C.G.G.J. van Steenis (1982)