| Name | Polytrichum algidum I. Hagen & C. E. O. Jensen |
| Authorship | I. Hagen & C. E. O. Jensen |
| Rank | Species |
| Placed in | Polytrichum |
| Citation | 1898 Meddel. Gronland, Biosci. 15: 384 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Polytrichum algidum I. Hagen & C. E. O. Jensen |
| Identification made in | [no date] (4) |