living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Eumycota see Kingdom Eumycota
           Subdivision Ascomycotina Ainsw. (1966) see Phylum Ascomycota Caval.-Sm. (1998)
             Genus Microstroma Niessl (1861)
             1 Class Hemiascomycetes Engl. (1903) see Class Saccharomycetes G.Winter (1880)
             2 Class Loculoascomycetes Ainsw. (1966) see Class Ascomycetes G.Winter (1880)
             3 Class Plectomycetes Ainsw. (1966) see Class Ascomycetes G.Winter (1880)
             4 Class Pyrenomycetes (Fr., 1821) Ainsworth (1966) see Class Ascomycetes G.Winter (1880)
             5 Class Discomycetes Sacc. (1889) see Class Ascomycetes G.Winter (1880)