| Name | Hypnum subaduncum (Warnstorf) Mönkemeyer |
| Authorship | (Warnstorf) Mönkemeyer |
| Rank | Species |
| Placed in | Hypnum Hedwig |
| Citation | 1903 Hedwigia 72 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hypnum subaduncum (Warnstorf) Mönkemeyer |
| Identification made in | [no date] (1) |