| Name | Mnium lycopodioides subsp. orthorrhynchum (Hartman) Wijk & Margadant |
| Authorship | (Hartman) Wijk & Margadant |
| Rank | Subspecies |
| Placed in | Mnium lycopodioides Schwägrichen |
| Citation | 1961 Taxon 10: 25 |
| Holdings | 81 Specimens held in the Harvard University Herbaria identified as Mnium lycopodioides subsp. orthorrhynchum (Hartman) Wijk & Margadant |
| Identification made in | [no date] (81) |