Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
     Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001)
       Division Pinophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) [monotypic]
         Class Pinopsida Burnett (1835)
           Order †Voltziales Andreánszky (1954)
             Family †Utrechtiaceae G. Mapes & G.W. Rothwell (2003) see Family Walchiaceae Stur (1875)
               Genus †Lebachia Florin (1938), nom. illeg. see Genus Walchia Sternb. (1825)