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] Genus Dimerium (Sacc. & P.Syd.) McAlpine (1903)