| Name | Arthonia sp. |
| Authorship | |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Arthonia Acharius |
| Holdings | 107 Specimens held in the Harvard University Herbaria identified as Arthonia sp. |
| Identification made in | [no date] (93), 1902 (1), 1911 (1), 1912 (1), 1979 (1), 2009 (2), 2018 (8) |
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