| Name | Arthonia pruinata (Persoon) Steudel ex A. L. Smith |
| Authorship | (Persoon) Steudel ex A. L. Smith |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Arthonia Acharius |
| Citation | 1911 Monogr. Lich. Britain 2: 214 |
| Holdings | 30 Specimens held in the Harvard University Herbaria identified as Arthonia pruinata (Persoon) Steudel ex A. L. Smith |
| Identification made in | [no date] (26), 2002 (2), 2009 (1), 2019 (1) |