| Name | Orthotrichum macounii var. lonchothecium (Muller Halle & Kindberg) Grout |
| Authorship | (Muller Halle & Kindberg) Grout |
| Rank | Variety |
| Placed in | Orthotrichum macounii Austin |
| Citation | 1935 Moss Fl. N. Amer. 2: 112 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Orthotrichum macounii var. lonchothecium (Muller Halle & Kindberg) Grout |
| Identification made in | [no date] (3) |
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