| Name | Arthonia pruinosella Nylander ex Hasse |
| Authorship | Nylander ex Hasse |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Arthonia Acharius |
| Citation | 1898 Bull. Torrey Bot. Club 25: 632 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Arthonia pruinosella Nylander ex Hasse |
| Identification made in | [no date] (5), 1999 (2), 2009 (2) |