| Name | Usnea tristis Motyka |
| Authorship | Motyka |
| Rank | Species |
| Placed in | Usnea Dillenius ex Adanson |
| GUID | urn:lsid:indexfungorum.org:names:412272 |
| Citation | 1936 Usnea fasc. 1: 232, 249 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Usnea tristis Motyka |
| Identification made in | [no date] (6) |
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