| Name | Hypericum japonicum Thunberg ex Murray |
| Authorship | Thunberg ex Murray |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Hypericum Linnaeus |
| Citation | 1784 Syst. Veg., ed. 14 [J. A. Murray] 702 |
| Holdings | 42 Specimens held in the Harvard University Herbaria identified as Hypericum japonicum Thunberg ex Murray |
| Identification made in | [no date] (13), 1993 (4), 2011 (7), 2023 (18) |