| Name | Elymus grandis Mackenzie & Bush |
| Authorship | Mackenzie & Bush |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Elymus Linnaeus |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Elymus grandis Mackenzie & Bush |
| Identification made in | [no date] (1) |
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