Species (95)
- Didymium minus (Lister) Morgan 1894
- Didymium iridis (Ditmar) Fr. 1829
- Didymium farinaceum Schrad. 1797
- Didymium farinaceum var. minus Lister 1894
- Didymium melanospermum var. minus (Lister) G. Lister 1925
- Didymium nigripes var. xanthopus (Ditmar) Lister 1894
- Didymium tubulatum E. Jahn 1919
- Didymium melanospermum (Pers.) T. Macbr. 1899
- Didymium difforme (Pers.) Gray 1821
- Didymium anellus
- Didymium decipiens
- Didymium crustaceum
- Didymium ovoideum
- Didymium quitense
- Didymium sturgisii
- Didymium vaccinum
- Didymium verrucosporum
- Didymium trachysporum
- Didymium aurantipes
- Didymium flexuosum
- Didymium intermedium
- Didymium floccosum
- Didymium fulvum
- Didymium iridis
- Didymium karstensii
- Didymium laxifila
- Didymium libertanium
- Didymium melanospermum
- Didymium listeri
- Didymium ochroideum
- Didymium perforatum
- Didymium serpula
- Didymium comatum (Lister
- Didymium difforme (Pers.
- Didymium dubium Rost.
- Didymium annulisporum Keller & Schoknecht
- Didymium nigripes (Link
- Didymium melanosperum (Pers.
- Didymium minus (Lister
- Didymium bahiense Gottsberger
- Didymium clavus (Alb. & Schw.
- Didymium megalosporum Berk. & Curt.
- Didymium squamulosum (Alb. & Schw.
- Didymium pusillum Berk. & M.A. Curtis 1873
- Didymium laxifilum G. Lister & J. Ross 1943
- Didymium marineri G. Moreno, Illana & Heykoop 1989
- Didymium megalosporum Berk. & M.A. Curtis 1873
- Didymium leptotrichum (Racib.) Massee 1892
- Didymium muscorum T.N. Lakh. & Mukerji 1976
- Didymium nigrum Krzemien. 1960
- Didymium obducens P. Karst. 1868
- Didymium nigripes (Link) Fr. 1818
- Didymium ovoideum Nann.-Bremek. 1958
- Didymium projectile T.N. Lakh. & Mukerji 1979
- Didymium pertusum Berk. 1836
- Didymium quitense (Pat.) Torrend. 1908
- Didymium serpula Fr. 1829
- Didymium squamulosum (Alb. & Schwein.) Fr. 1818
- Didymium tussilaginis (Berk. & Broome) Massee 1892
- Didymium vaccinum (Durieu & Mont.) Buchet 1920
- Didymium trachysporum G. Lister 1922
- Didymium sturgisii Hagelst. 1937
- Didymium vernum Kuhnt, K. Baumann & Nowontny 2014
- Didymium verrucosporum A.L. Welden 1954
- Didymium wilczekii Meyl. 1908
- Didymium spumarioides Fr. 1818
- Didymium crustaceum Fr. 1829
- Didymium dubium Rostaf. 1874
- Didymium flexuosum Yamash. 1936
- Didymium eximium Peck 1879
- Didymium karstensii Nann.-Bremek. 1964
- Didymium testaceum Schrad. 1797
- Didymium macrospermum Rostaf. 1875
- Didymium nivicolum Meyl. 1921
- Didymium ochroideum G. Lister 1931
- Didymium annulisporum H.W. Keller & Schokn. 1989
- Didymium anellus Morgan 1894
- Didymium bahiense Gottsb. 1968
- Didymium clavus (Alb. & Schwein.) Racib. 1844
- Didymium applanatum Nann.-Bremek. 1971
- Didymium crassicolle Ing 1982
- Didymium comatum (Lister) Nann.-Bremek. 1966
- Didymium decipiens Meyl. 1935
- Didymium listeri Massee 1892
- Didymium tigrinum Schrad. 1797
- Physarum pusillum (Berk. & M.A. Curtis) G. Lister 1911
- Diderma spumarioides (Fr.) Fr. 1829
- Diderma testaceum (Schrad.) Pers. 1801
- Lepidoderma tigrinum (Schrad.) Rostaf. 1873
- Physarum melanospermum Pers. 1794
- Diderma squamulosum Alb. & Schwein. 1805
- Diderma difforme var. repandum G. Lister 1921
- Diderma difforme Pers. 1826
- Physarum nigripes Link 1809
- Physarum clavus Alb. & Schwein. 1805