| Name | Arthonia byssacea (Weigel) Almquist |
| Authorship | (Weigel) Almquist |
| Rank | Species |
| Placed in | Arthonia Acharius |
| GUID | urn:lsid:indexfungorum.org:names:376373 |
| Citation | 1880 Kongl. Vetensk. Acad. Handl. ser. 2, 17(6): 25 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Arthonia byssacea (Weigel) Almquist |
| Identification made in | [no date] (5) |