| Name | Parmelia cetrata f. sorediifera Vainio |
| Authorship | Vainio |
| Rank | Forma |
| Placed in | Parmelia cetrata Acharius |
| GUID | urn:lsid:indexfungorum.org:names:458975 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Parmelia cetrata f. sorediifera Vainio |
| Identification made in | [no date] (2) |
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