| Name | Aecidium breyniae Sydow & P. Sydow |
| Authorship | Sydow & P. Sydow |
| Rank | Species |
| Placed in | Aecidium |
| Citation | 1907 Ann. Mycol. 5(6): 506 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Aecidium breyniae Sydow & P. Sydow |
| Identification made in | [no date] (3) |