| Name | Usnea arizonica Motyka |
| Authorship | Motyka |
| Rank | Species |
| Placed in | Usnea Dillenius ex Adanson |
| GUID | urn:lsid:indexfungorum.org:names:412006 |
| Citation | 1936 Usnea 1: 248 |
| Holdings | 15 Specimens held in the Harvard University Herbaria identified as Usnea arizonica Motyka |
| Identification made in | [no date] (15) |