| Name | Polytrichastrum longisetum (Swartz ex Bridel) G. L. Smith |
| Authorship | (Swartz ex Bridel) G. L. Smith |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Polytrichastrum |
| Holdings | 64 Specimens held in the Harvard University Herbaria identified as Polytrichastrum longisetum (Swartz ex Bridel) G. L. Smith |
| Identification made in | [no date] (64) |
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