| Name | Tortula costesii Thériot |
| Authorship | Thériot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Tortula Hedwig |
| Citation | 1921 Revista Chilena Hist. Nat. 25: 298 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Tortula costesii Thériot |
| Identification made in | [no date] (2), 2005 (2) |
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