| Name | Usnea californica Herre |
| Authorship | Herre |
| Rank | Species |
| Placed in | Usnea Dillenius ex Adanson |
| GUID | urn:lsid:indexfungorum.org:names:408331 |
| Citation | 1906 Proc. Wash. Acad. Sci. 7: 345 |
| Holdings | 14 Specimens held in the Harvard University Herbaria identified as Usnea californica Herre |
| Identification made in | [no date] (10), 1965 (4) |
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