| Name | Ptychomitrium serratum Bruch & Schimper |
| Authorship | Bruch & Schimper |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Ptychomitrium |
| Holdings | 40 Specimens held in the Harvard University Herbaria identified as Ptychomitrium serratum Bruch & Schimper |
| Identification made in | [no date] (20), 1995 (1), 2009 (19) |