| Name | Placodium spraguei Tuckerman |
| Authorship | Tuckerman |
| Rank | Species |
| Placed in | Placodium Hill ex F. H. Wiggers |
| GUID | urn:lsid:indexfungorum.org:names:401295 |
| Citation | 1882 Syn. N. Amer. Lich. 1: 179 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Placodium spraguei Tuckerman |
| Identification made in | [no date] (3) |