| Name | Calyptothecium duplicatum (Schwägrichen) Brotherus |
| Authorship | (Schwägrichen) Brotherus |
| Rank | Species |
| Placed in | Calyptothecium |
| Citation | 1906 Nat. Pflanzenfam. [Engler & Prantl] I(3): 839 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Calyptothecium duplicatum (Schwägrichen) Brotherus |
| Identification made in | [no date] (1) |
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