• Diderma Persoon, 1794
• Diderma alexopouli T.N. Lakh., 1978
• Diderma alpinospumarioides K.S. Thind, 1977
• Diderma alpinum Meyl., 1917
• Diderma areolatum M.L. Farr, 1979
• Diderma asteroides (Lister & G. Lister) G. Lister, 1911
• Diderma aurantiacum Y. Yamam. & Nann.-Bremek., 1990
• Diderma badhamioides K.S. Thind, 1977
• Diderma badhamiopsis Y. Yamam. & Nann.-Bremek., 1995
• Diderma botryosum Nann.-Bremek. & Y. Yamam., 1986
• Diderma brooksii Kowalski, 1968
• Diderma brunneobasale S.L. Stephenson & Nann.-Bremek., 1990
• Diderma brunneolum W. Phillips, 1877 accepted as Physarum brunneolum (W. Phillips) Massee, 1892
• Diderma carneum Nann.-Bremek., 1968
• Diderma chondrioderma (de Bary & Rostaf.) G. Lister, 1925
• Diderma cinereum Morgan, 1894
• Diderma cingulatum Nann.-Bremek., 1968
• Diderma circumscissile S.D. Patil, R.L. Mishra & Ranade, 1979
• Diderma citrinum (Schumach.) Fr., 1829 accepted as Physarum citrinum Schumach., 1803
• Diderma clavus (Alb. & Schwein.) anon. ined. accepted as Didymium clavus (Alb. & Schwein.) Rabenh., 1844
• Diderma conglomeratum Fr., 1829 accepted as Physarum conglomeratum (Fr.) Rostaf., 1874
• Diderma contextum Pers., 1796 accepted as Physarum contextum (Pers.) Pers., 1801
• Diderma corrugatum T.E. Brooks & H.W. Keller, 1977
• Diderma crustaceum Peck, 1874
• Diderma darjeelingense K.S. Thind & H.S. Sehgal, 1964
• Diderma deplanatum Fr., 1829
• Diderma diadematum Schokn. & J.L. Crane, 1978
• Diderma difforme Pers., 1797 accepted as Didymium difforme (Pers.) Gray, 1821
• Diderma donkii Nann.-Bremek., 1973
• Diderma effusum (Schwein.) Morgan, 1894
• Diderma evelinae (Meyl.) Kowalski, 1975
• Diderma floriforme (Bull.) Pers., 1794
• Diderma fragile Aramb., 1973
• Diderma gigantocolumellae M.L. Farr, 1971
• Diderma globosum Pers., 1794
• Diderma globuliferum (Bull.) Fr., 1829 accepted as Physarum globuliferum (Bull.) Pers., 1801
• Diderma gracile Aramb., 1973
• Diderma hemisphaericum (Bull.) Hornem., 1829
• Diderma indicum K.S. Thind & H.S. Sehgal, 1964
• Diderma lohgadense S.D. Patil, R.L. Mishra & Ranade, 1979
• Diderma lucidum Berk. & Broome, 1861
• Diderma luteoalbum Buchet, 1941 accepted as Physarum luteoalbum Lister & G. Lister, 1904
• Diderma lyallii (Massee) T. Macbr., 1899
• Diderma maculatum Buyck, 1984
• Diderma marieae S.D. Patil, R.L. Mishra & Ranade, 1979
• Diderma melanospermum (Pers.) Fr., 1829 accepted as Didymium melanospermum (Pers.) T. Macbr., 1899
• Diderma meyerae H. Singer, G. Moreno, Illana & A. Sánchez ined.
• Diderma michelii (Lib.) Morgan, 1894 accepted as Diderma hemisphaericum (Bull.) Hornem., 1829
• Diderma microcarpum Meyl., 1924
• Diderma miniatum Nann.-Bremek., 1989
• Diderma montanum (Meyl.) Meyl., 1921
• Diderma nigrum Kowalski, 1968
• Diderma nitens Klotzsch, 1836 accepted as Didymium difforme (Pers.) Gray, 1821
• Diderma nivale (Meyl.) Nowotny, H. Neubert & K. Baumann, 1991 accepted as Trichia alpina (R.E. Fr.) Meyl., 1921
• Diderma niveum (Rostaf.) T. Macbr., 1899
• Diderma niveum sensu auct. accepted as Diderma meyerae H. Singer, G. Moreno, Illana & A. Sánchez ined.
• Diderma ochraceum Hoffm., 1795
• Diderma petaloides Buyck, 1983
• Diderma peyerimhoffii (Maire & Pinoy) H. Neubert, Nowotny & K. Baumann, 2000
• Diderma platycarpum Nann.-Bremek., 1966
• Diderma punense S.D. Patil, R.L. Mishra & Ranade, 1979
• Diderma radiatum (L.) Morgan, 1894
• Diderma reticulatum (Alb. & Schwein.) Fr., 1829 accepted as Willkommlangea reticulata (Alb. & Schwein.) Kuntze, 1891
• Diderma reticulatum (Rostaf.) Morgan, 1894 accepted as Diderma effusum (Schwein.) Morgan, 1894
• Diderma reticulosporum Nann.-Bremek., Mukerji & Pasricha, 1984
• Diderma rimosum Eliasson & Nann.-Bremek., 1983
• Diderma robustum Aramb., 1973
• Diderma rufostriatum Nann.-Bremek. & Ladó, 1985
• Diderma rufum Nann.-Bremek., 1968
• Diderma sauteri (Rostaf.) T. Macbr., 1899
• Diderma scabrum Eliasson & Nann.-Bremek., 1983
• Diderma sessile (Brândza) Mar. Mey. & Poulain, 1999
• Diderma simplex (J. Schröt.) G. Lister, 1911
• Diderma spumarioides (Fr.) Fr., 1829
• Diderma squamulosum Alb. & Schwein., 1805 accepted as Didymium squamulosum (Alb. & Schwein.) Fr., 1818
• Diderma stellulum M.L. Farr, 1988
• Diderma subasteroides M.L. Farr, 1971
• Diderma subcaeruleum Kowalski, 1968
• Diderma subincarnatum Kowalski, 1967
• Diderma subviridifuscum Buyck, 1988
• Diderma testaceum (Schrad.) Pers., 1801
• Diderma trevelyani (Grev.) Fr., 1829
• Diderma umbilicatum Pers., 1801
• Diderma vaccinum Durieu & Mont., 1848 accepted as Didymium vaccinum (Durieu & Mont.) Buchet, 1920
• Diderma vernicosum Pers., 1795 accepted as Leocarpus fragilis (Dicks.) Rostaf., 1874