| argentina | | didymium infundibuliforme | species | 1 | 0 |
| argentina | | didymium squamulosum | species | 1 | 0 |
| argentina | | didymium xerophilum | species | 1 | 0 |
| brazil | | didymium bahiense | species | 1 | 0 |
| brazil | | didymium minus | species | 1 | 0 |
| chile | | didymium crustaceum | species | 1 | 0 |
| chile | | didymium megalosporum | species | 1 | 0 |
| chile | | didymium nigripes | species | 1 | 0 |
| chile | | didymium operculatum | species | 2 | 0 |
| chile | | didymium sp. ma-fungi 78327 | species | 1 | 0 |
| china | | didymium squamulosum | species | 6 | 0 |
| china | gansu | didymium anellus | species | 1 | 0 |
| china | gansu | didymium sp. | species | 1 | 0 |
| china | heilongjiang | didymium leoninum | species | 1 | 0 |
| china | jilin | didymium crustaceum | species | 1 | 0 |
| china | ningxia | didymium squamulosum | species | 1 | 0 |
| czech republic | | didymium sp. ccikv | species | 1 | 0 |
| ecuador | | didymium clavus | species | 1 | 0 |
| ecuador | | didymium floccosum | species | 1 | 0 |
| france | | didymium dubium | species | 1 | 0 |
| germany | | didymium difforme | species | 3 | 0 |
| germany | | didymium dubium | species | 2 | 0 |
| honduras | | didymium iridis | species | 1 | 0 |
| italy | | didymium clavus | species | 1 | 0 |
| italy | | didymium dubium | species | 3 | 0 |
| madagascar | | didymium clavus | species | 1 | 0 |
| madagascar | | didymium intermedium | species | 1 | 0 |
| madagascar | | didymium trachysporum | species | 1 | 0 |
| madagascar | | didymium verrucosporum | species | 1 | 0 |
| mexico | | didymium cf. umbilicatum | species | 1 | 0 |
| mexico | | didymium floccosum | species | 1 | 0 |
| mexico | | didymium tehuacanense | species | 1 | 0 |
| mexico | | didymium umbilicatum | species | 1 | 0 |
| mexico | | didymium wildpretii | species | 1 | 0 |
| mexico | hidalgo | didymium umbilicatum | species | 0 | 1 |
| mexico | oaxaca | didymium umbilicatum | species | 0 | 1 |
| mexico | puebla | didymium umbilicatum | species | 0 | 1 |
| peru | | didymium xerophilum | species | 1 | 0 |
| poland | | didymium nigripes | species | 1 | 0 |
| russia | | didymium melanospermum | species | 3 | 0 |
| russia | | didymium nigripes | species | 1 | 0 |
| russia | | didymium squamulosum | species | 2 | 0 |
| russia | | didymium trachysporum | species | 1 | 0 |
| russia | karelia republic | didymium melanospermum | species | 1 | 0 |
| russia | tver oblast | didymium melanospermum | species | 1 | 0 |
| russia | vladimir oblast | didymium melanospermum | species | 1 | 0 |
| spain | | didymium anellus | species | 1 | 0 |
| spain | | didymium difforme | species | 1 | 0 |
| spain | | didymium megalosporum | species | 2 | 0 |
| spain | | didymium pertusum | species | 2 | 0 |
| spain | | didymium serpula | species | 1 | 0 |
| spain | | didymium squamulosum | species | 2 | 0 |
| spain | canary islands | didymium wildpretii | species | 0 | 1 |
| ukraine | | didymium dubium | species | 1 | 0 |
| united states | florida | didymium sp. ech43/i | species | 1 | 0 |
| united states | indiana | didymium sp. ech49/i | species | 1 | 0 |
| united states | massachusetts | didymium sp. cohh 22c7 | species | 1 | 0 |
| vietnam | | didymium flexuosum | species | 1 | 0 |
| vietnam | | didymium sp. | species | 2 | 0 |