| Name | Melampsora humboldtiana Spegazzini |
| Authorship | Spegazzini |
| Rank | Species |
| Placed in | Melampsora |
| Citation | 1912 Anales Mus. Nac. Hist. Nat. Buenos Aires 23: 28 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Melampsora humboldtiana Spegazzini |
| Identification made in | [no date] (4) |