| 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) | 
