| Name | Sphaerotheca castagnei f. humuli-lupuli Saccardo |
| Authorship | Saccardo |
| Rank | Forma |
| NomenclaturalStatus | NomNov |
| Placed in | Sphaerotheca castagnei Léveillé |
| Citation | 1876 Mycoth. Veneta Cent. 7: no. 627 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sphaerotheca castagnei f. humuli-lupuli Saccardo |
| Identification made in | [no date] (2) |