| Bysmatrum granulosum Ten-Hage, Quod, Turquet & Couté, 2001 |
| Bysmatrum gregarium (E.H. Lombard & Capon) T. Horiguchi & Pienaar, 2014 |
| Bysmatrum subsalsum (Ostenfeld) M.A. Faust & Steid.,1998 |
| Cacumisporium Preuss, 1851 |
| Cacumisporium curvularioides R. F. Castañeda & W. B. Kendr., 1991 |
| Cacumisporium pleuroconidiophorum (Davydkina & Melnik) R. F. Castañeda, Heredia & Iturr., 2007 |
| Caeruleoconidia Zhurb. & Pino-Bodas, 2017 |
| Caeruleoconidia ochrolechiae Zhurb. & Pino-Bodas, 2017 |
| Camarosporium Schulzer, 1870 |
| Camarosporium roumeguerei Sacc., 1880 |
| Camposporium Harkn., 1884 |
| Camposporium antennatum Harkn., 1884 |
| Camposporium ontariense Matsush., 1983 |
| Camposporium quercicola Mercado, Heredia & J. Mena, 1995 |
| Campylospora Ranzoni, 1953 |
| Campylospora filicladia Nawawi, 1974 |
| Canalisporium Nawawi & Kuthub., 1989 |
| Canalisporium caribense (Hol.-Jech. & Mercado) Nawawi & Kuthub., 1989 |
| Candelabrum Beverw., 1951 |
| Candelabrum brocchiatum Tubaki, 1975 |