Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Aphelidiomycota Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, M. Döring, Schigel, T.W. May, M. Ryberg & Abarenkov (2018) [monotypic]
     Class Aphelidiomycetes Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, M. Döring, Schigel, T.W. May, M. Ryberg & Abarenkov (2018) [monotypic]
       Order Aphelidiales Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, M. Döring, Schigel, T.W. May, M. Ryberg & Abarenkov (2018) [monotypic]
         Family Aphelidiaceae Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, M. Döring, Schigel, T.W. May, M. Ryberg & Abarenkov (2018)
           1 Genus Amoeboaphelidium Scherff. (1925) see Genus Amoeboaphelidium Scherffel, 1925
           2 Genus Aphelidium Zopf (1884), nom. dub. see Genus Aphelidium Zopf, 1884
           3 Genus Paraphelidium Karpov, Moreira & López-García (2016) see Genus Paraphelidium Karpov, Moreira & López-García, 2016
           4 Genus Pseudaphelidium Schweikert & Schnepf (1996) [monotypic] see Genus Pseudaphelidium Schweikert & Schnepf, 1996