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)
             Class Discomycetes Sacc. (1889) see Class Ascomycetes G.Winter (1880)
               Order Phacidiales Bessey (1907)
                 Family Phacidiaceae Fr. (1821)
                   1 Tribe Coccophacidieae
                   2 Tribe Pseudophacidieae
                   3 Tribe Phacidieae
                   4 Genus Phacidium Fr. (1815), nom. sanct., nom. cons.
                   5 Genus Therrya Sacc. (1882)