| Name | Ptychomitrium subcylindricum Thériot |
| Authorship | Thériot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Ptychomitrium |
| Citation | 1937 Rev. Bryol. Lichenol. 10: 76 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ptychomitrium subcylindricum Thériot |
| Identification made in | 2023 (1) |