| Name | Polytrichastrum sexangulare (Flörke ex Bridel) G. L. Smith |
| Authorship | (Flörke ex Bridel) G. L. Smith |
| Rank | Species |
| Placed in | Polytrichastrum |
| Citation | 1971 Mem. New York Bot. Gard. 21(3): 37. |
| Holdings | 15 Specimens held in the Harvard University Herbaria identified as Polytrichastrum sexangulare (Flörke ex Bridel) G. L. Smith |
| Identification made in | [no date] (15) |