| Name | Aecidium tweedianum Spegazzini |
| Authorship | Spegazzini |
| Rank | Species |
| Placed in | Aecidium |
| Citation | 1880 Anales Soc. Ci. Argent. 10 (3): 111 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Aecidium tweedianum Spegazzini |
| Identification made in | [no date] (1) |
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