| Name | Arthonia tetramera Hasse |
| Authorship | Hasse |
| Rank | Species |
| Placed in | Arthonia Acharius |
| Citation | 1913 Contr. U.S. Natl. Herb. 17: 19 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Arthonia tetramera Hasse |
| Identification made in | 1999 (3) |
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