| Name | Aulacomnium palustre f. polycephalum Kabiersch |
| Authorship | Kabiersch |
| Rank | Forma |
| Placed in | Aulacomnium palustre (Hedwig) Schwägrichen |
| Citation | 1937 Hedwigia 77: 129 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Aulacomnium palustre f. polycephalum Kabiersch |
| Identification made in | [no date] (7) |
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