| Name | Microsphaera diffusa f. elongata U. Braun |
| Authorship | U. Braun |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Microsphaera diffusa Cooke & Peck |
| Citation | 1984 Mycotaxon 20(2): 492 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Microsphaera diffusa f. elongata U. Braun |
| Identification made in | 1984 (3) |