| Name | Physcomitrium collenchymatum Gier |
| Authorship | Gier |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Physcomitrium |
| Citation | 1955 Trans. Kansas Acad. Sci. 58: 330 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Physcomitrium collenchymatum Gier |
| Identification made in | [no date] (4) |