| Name | Arthonia exilis (Flörke) Anzi |
| Authorship | (Flörke) Anzi |
| Rank | Species |
| Placed in | Arthonia Acharius |
| Citation | 1860 Cat. Lich. Sondr. 94 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Arthonia exilis (Flörke) Anzi |
| Identification made in | [no date] (6) |
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