Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
     Superdivision Pteridophytanae Doweld (2001) [monotypic] see Superphylum Pteridophytanae Doweld (2001)
       Division Monilophyta Cantino & Donoghue
         Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns
           Order Polypodiales Link (1833) - cathetogyrates
             Family Polypodiaceae J.Presl & C.Presl (1822) - polygrams
               Subfamily Microsoroideae B.K.Nayar (1970)
                 Genus Kontumia S.K.Wu & P.K.Lôc see Genus Leptochilus Kaulf. (1824)