Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Dothideomycetes O.E. Erikss. & Winka (1997) Order Microthyriales G. Arnaud (1918), incertae sedis [monotypic] Family Microthyriaceae Sacc. (1883) Genus Seynesiella G. Arnaud (1918)