| Name | Physcia alba var. obsessa (Montagne) J. W. Thomson |
| Authorship | (Montagne) J. W. Thomson |
| Rank | Variety |
| Placed in | Physcia alba (Fée) Müller Argoviensis |
| GUID | urn:lsid:indexfungorum.org:names:477516 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Physcia alba var. obsessa (Montagne) J. W. Thomson |
| Identification made in | [no date] (1) |
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