| Name | Usnea flagellata Motyka |
| Authorship | Motyka |
| Rank | Species |
| Placed in | Usnea Dillenius ex Adanson |
| GUID | urn:lsid:indexfungorum.org:names:371110 |
| Citation | 1936 Usnea fasc. 1: 182, 204 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Usnea flagellata Motyka |
| Identification made in | [no date] (1) |