| Name | Polygonum sagittatum var. gracilentum Fernald |
| Authorship | Fernald |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Polygonum sagittatum Linnaeus |
| GUID | urn:lsid:ipni.org:names:206396-2 |
| Citation | 1942 Rhodora 44: 393 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Polygonum sagittatum var. gracilentum Fernald |
| Identification made in | [no date] (2), 2019 (2) |