Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Eurotiomycetes O.E. Erikss. & Winka (1997)
       Subclass Chaetothyriomycetidae Doweld (2001)
         Order Verrucariales Mattick ex D.Hawksw. & O.E. Erikss. (1986)
           Family Verrucariaceae Zenker (1827)
             Genus Polyblastia A.Massal. (1852), nom. cons.