| Name | Arthonia platygraphidea Nylander |
| Authorship | Nylander |
| Rank | Species |
| Placed in | Arthonia Acharius |
| GUID | urn:lsid:indexfungorum.org:names:376748 |
| Citation | 1863 Acta Soc. Sci. Fenn. 7: 483 |
| Holdings | 19 Specimens held in the Harvard University Herbaria identified as Arthonia platygraphidea Nylander |
| Identification made in | [no date] (19) |