Kingdom Plantae Haeckel (1866) - plants
   Division Pinophyta Cronquist, Takht. & Zimmerm. see Division Pinophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996)
     Subdivision Gneticae see Class Gnetopsida Eichler ex Kirpot. (1884)
       1 Order Gnetales Mart. (1835)
       2 Order Ephedrales Dumort. (1829)
       3 Order Welwitschiales Skottsb. ex Reveal (1993)