| Name | Hygroamblystegium fluviatile var. ovatum Grout |
| Authorship | Grout |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Hygroamblystegium fluviatile (Hedwig) Loeske |
| Citation | 1931 Moss Fl. N. Amer. 3: 74 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Hygroamblystegium fluviatile var. ovatum Grout |
| Identification made in | [no date] (5) |