| Name | Trisetum spicatum subsp. congdonii (Scribner & Merrill) Hitchcock |
| Authorship | (Scribner & Merrill) Hitchcock |
| Rank | Subspecies |
| Placed in | Trisetum spicatum (Linnaeus) K. Richter |
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Trisetum spicatum subsp. congdonii (Scribner & Merrill) Hitchcock |
| Identification made in | [no date] (13) |