| Name | Ptychomitrium leibergii Best |
| Authorship | Best |
| Rank | Species |
| Placed in | Ptychomitrium |
| Citation | 1906 Bryologist 9: 80. 7 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ptychomitrium leibergii Best |
| Identification made in | [no date] (1) |
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