Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Dothideomycetes O.E. Erikss. & Winka (1997)
       Family Dimeriaceae E. Müll. & Arx ex Arx & E. Müll. (1975), incertae sedis [monotypic]
         1 Genus Dimerium (Sacc. & P.Syd.) McAlpine (1903)