| Name | Rhytidiadelphus triquetrus var. beringianus (Cardot & Thériot) Grout |
| Authorship | (Cardot & Thériot) Grout |
| Rank | Variety |
| Placed in | Rhytidiadelphus triquetrus (Hedwig) Warnstorf |
| Citation | 1929 Check List Pleuroc. Mosses N. Amer. 18 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Rhytidiadelphus triquetrus var. beringianus (Cardot & Thériot) Grout |
| Identification made in | [no date] (12) |
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