| Name | Hysterium elongatum Wahlenberg: Fries |
| Authorship | Wahlenberg: Fries |
| Rank | Species |
| Placed in | Hysterium |
| Citation | 1812 Fl. Lapp. (Wahlenberg) 528 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Hysterium elongatum Wahlenberg: Fries |
| Identification made in | [no date] (2) |