| Name | Usnea aspera (Eschweiler) Vainio |
| Authorship | (Eschweiler) Vainio |
| Rank | Species |
| Placed in | Usnea Dillenius ex Adanson |
| Citation | 1890 Acta Soc. Fauna Fl. Fenn. 7(1): 71 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Usnea aspera (Eschweiler) Vainio |
| Identification made in | [no date] (1) |
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