| Name | Placynthium petersii (Nylander) Burnham |
| Authorship | (Nylander) Burnham |
| Rank | Species |
| Placed in | Placynthium |
| GUID | urn:lsid:indexfungorum.org:names:401397 |
| Citation | 1922 Bryologist 25: 80 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Placynthium petersii (Nylander) Burnham |
| Identification made in | [no date] (4) |