| Name | Parmotrema subrigidum Egan |
| Authorship | Egan |
| Rank | Species |
| Placed in | Parmotrema A. Massalongo |
| GUID | urn:lsid:indexfungorum.org:names:357169 |
| Citation | 2005 Bryologist 108(3): 404 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Parmotrema subrigidum Egan |
| Identification made in | [no date] (5), 2018 (2) |
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