| Name | Quercus ×grandidentata Ewan |
| Authorship | Ewan |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Quercus Linnaeus |
| Citation | 1937 Bull. Torrey Bot. Club 64: 512 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Quercus ×grandidentata Ewan |
| Identification made in | [no date] (5), 1986 (1) |