| Name | Physcomitrium kellermanii var. drummondii (E. Britton) Grout |
| Authorship | (E. Britton) Grout |
| Rank | Variety |
| Placed in | Physcomitrium kellermanii E. Britton |
| Citation | 1935 Moss Fl. N. Amer. 2: 76. 28. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Physcomitrium kellermanii var. drummondii (E. Britton) Grout |
| Identification made in | [no date] (1) |
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