| Name | Orthotrichum pycnophyllum Schimper |
| Authorship | Schimper |
| Rank | Species |
| Placed in | Orthotrichum |
| Citation | 1849 Syn. Musc. Frond. 1(5): 709 |
| Holdings | 20 Specimens held in the Harvard University Herbaria identified as Orthotrichum pycnophyllum Schimper |
| Identification made in | [no date] (20) |
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