| Name | Usnea flexuosa Taylor |
| Authorship | Taylor |
| Rank | Species |
| Placed in | Usnea Dillenius ex Adanson |
| Citation | 1847 J. Bot. 6: 192 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Usnea flexuosa Taylor |
| Identification made in | [no date] (1), 1996 (1) |
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