| Name | Grimmia rivulariopsis R. S. Williams |
| Authorship | R. S. Williams |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Grimmia |
| Citation | 1916 Bull. Torrey Bot. Club 43: 327 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Grimmia rivulariopsis R. S. Williams |
| Identification made in | [no date] (1) |