| Name | Uromyces junci-effusi P. Sydow & Sydow |
| Authorship | P. Sydow & Sydow |
| Rank | Species |
| Placed in | Uromyces (Link) Unger |
| Citation | 1910 Monogr. Ured. 2(2): 290 |
| Holdings | 36 Specimens held in the Harvard University Herbaria identified as Uromyces junci-effusi P. Sydow & Sydow |
| Identification made in | [no date] (35), 1924 (1) |