| Name | Hypericum nagasawae Hayata |
| Authorship | Hayata |
| Rank | Species |
| Placed in | Hypericum Linnaeus |
| Citation | 20 Jun 1911 J. Coll. Sci. Imp. Univ. Tokyo 30(Art. 1): 38 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Hypericum nagasawae Hayata |
| Identification made in | 2023 (3) |