| Name | Grimmia montana var. idahensis Renauld & Cardot |
| Authorship | Renauld & Cardot |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Grimmia montana Bruch & Schimper |
| Citation | 1900 Bot. Gaz. 30: 16 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Grimmia montana var. idahensis Renauld & Cardot |
| Identification made in | [no date] (1) |