| Name | Ptychomitrium cylindrothecium (Müller Halle) Paris |
| Authorship | (Müller Halle) Paris |
| Rank | Species |
| Placed in | Ptychomitrium |
| Citation | 1898 Index Bryol. 1056. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ptychomitrium cylindrothecium (Müller Halle) Paris |
| Identification made in | [no date] (1) |