| Name | Persicaria filiformis (Thunberg) Nakai |
| Authorship | (Thunberg) Nakai |
| Rank | Species |
| Placed in | Persicaria |
| Citation | 1919 Rep. Veg. Ooryongto 18 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Persicaria filiformis (Thunberg) Nakai |
| Identification made in | [no date] (1), 2019 (1) |