Flora Europaea Haeckel (1866) - plants
   Spermatophyta Goebel (1882) see Phylum Spermatophyta Goebel (1882)
     Gymnospermae see Infraphylum Gymnospermae auct.
       1 Coniferopsida see Class Pinopsida Burnett (1835)
       2 Taxopsida Lotsy (1909)
       3 Gnetopsida Eichler ex Kirpot. (1884)