| Name | Elymus macrourus (Turczaninow ex Steudel) Tzvelev |
| Authorship | (Turczaninow ex Steudel) Tzvelev |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Elymus Linnaeus |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Elymus macrourus (Turczaninow ex Steudel) Tzvelev |
| Identification made in | [no date] (1) |