| Name | Aecidium lactucinum Lagerheim & Lindroth |
| Authorship | Lagerheim & Lindroth |
| Rank | Species |
| Placed in | Aecidium |
| Citation | 1901 [3 May 1901] Acta Soc. Sci. Fenn. 20(no. 9): 19 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Aecidium lactucinum Lagerheim & Lindroth |
| Identification made in | [no date] (2) |