| Name | Arthonia nylanderi Zahlbruckner |
| Authorship | Zahlbruckner |
| Rank | Species |
| Placed in | Arthonia Acharius |
| Citation | 1922 ["1924"] Cat. Lich. Univ. 2: 70 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Arthonia nylanderi Zahlbruckner |
| Identification made in | [no date] (1) |