| Name | Orthotrichum macounii Austin |
| Authorship | Austin |
| Rank | Species |
| Placed in | Orthotrichum |
| Contains | Orthotrichum macounii var. lonchothecium (Muller Halle & Kindberg) Grout |
| Citation | 1879 Bull. Torrey Bot. Club 6: 343 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Orthotrichum macounii Austin |
| Identification made in | [no date] (10) |
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