| Name | Arthonia glaucescens Nylander |
| Authorship | Nylander |
| Rank | Species |
| Placed in | Arthonia Acharius |
| Citation | 1890 Syn. Arthonia 20 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Arthonia glaucescens Nylander |
| Identification made in | [no date] (1) |
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