| Name | Polytrichum commune var. perigoniale (Michaux) Hampe |
| Authorship | (Michaux) Hampe |
| Rank | Variety |
| Placed in | Polytrichum commune Hedwig |
| Holdings | 108 Specimens held in the Harvard University Herbaria identified as Polytrichum commune var. perigoniale (Michaux) Hampe |
| Identification made in | [no date] (108) |
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