| Name | Orthotrichum arcticum var. blyttii (Schimper) Cardot & Thériot |
| Authorship | (Schimper) Cardot & Thériot |
| Rank | Variety |
| Placed in | Orthotrichum arcticum Schimper |
| Citation | 1902 Proc. Wash. Acad. Sci. 4: 299 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Orthotrichum arcticum var. blyttii (Schimper) Cardot & Thériot |
| Identification made in | [no date] (3) |
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