| Name | Isoetes ×harveyi A. A. Eaton |
| Authorship | A. A. Eaton |
| Rank | Species |
| Placed in | Isoetes Linnaeus |
| Citation | 1900 Fernwort Pap. 11 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Isoetes ×harveyi A. A. Eaton |
| Identification made in | [no date] (3), 2018 (2) |