| Name | Hypnum asperrimum Mitten ex Müller Halle |
| Authorship | Mitten ex Müller Halle |
| Rank | Species |
| Placed in | Hypnum Hedwig |
| Citation | 1858 Bot. Zeitung (Berlin) 16(24): 170 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hypnum asperrimum Mitten ex Müller Halle |
| Identification made in | [no date] (1) |
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