| Name | Aecidium petasitis Gray |
| Authorship | Gray |
| Rank | Species |
| Placed in | Aecidium |
| Citation | 1821 Nat. Arr. Brit. Pl. 1: 536 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Aecidium petasitis Gray |
| Identification made in | [no date] (4) |
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