| Name | Thamnocalamus spathaceus (Fries) Soderstrom |
| Authorship | (Fries) Soderstrom |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Thamnocalamus Munro |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Thamnocalamus spathaceus (Fries) Soderstrom |
| Identification made in | [no date] (3) |