| Name | Oidium megalosporum Berkeley & M. A. Curtis |
| Authorship | Berkeley & M. A. Curtis |
| Rank | Species |
| Placed in | Oidium |
| Citation | 1868 J. Linn. Soc., Bot. 10(46): 363 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Oidium megalosporum Berkeley & M. A. Curtis |
| Identification made in | [no date] (2), 1970 (1), 1992 (1) |