| Name | Hypogymnia duplicata (Acharius) Rassadina |
| Authorship | (Acharius) Rassadina |
| Rank | Species |
| Placed in | Hypogymnia (Nylander) Nylander |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Hypogymnia duplicata (Acharius) Rassadina |
| Identification made in | [no date] (2), 2018 (1), 2019 (2) |