| Name | Brachythecium rivulare var. laxum Grout |
| Authorship | Grout |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Brachythecium rivulare Bruch, Schimper & C. Gümbel |
| Citation | 1901 Bryologist 4: 48 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Brachythecium rivulare var. laxum Grout |
| Identification made in | [no date] (2) |