| Name | Plagiothecium groutii Cardot & Thériot |
| Authorship | Cardot & Thériot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Plagiothecium |
| Citation | 1904 Bot. Gaz. 37:379 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Plagiothecium groutii Cardot & Thériot |
| Identification made in | 1985 (1) |