| Name | Plagiothecium denticulatum var. bullulae Grout |
| Authorship | Grout |
| Rank | Variety |
| Placed in | Plagiothecium denticulatum (Hedwig) Schimper |
| Citation | 1942 N. Amer. Musci Perf. 450 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Plagiothecium denticulatum var. bullulae Grout |
| Identification made in | [no date] (2) |