| Name | Polygonum tenue var. latifolium Engelmann |
| Authorship | Engelmann |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Polygonum tenue Michaux |
| GUID | urn:lsid:ipni.org:names:206436-2 |
| Citation | 1863 Proc. Acad. Nat. Sci. Philadelphia [15]: 75, adnot. |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Polygonum tenue var. latifolium Engelmann |
| Identification made in | [no date] (2), 2010 (1) |