| Name | Polygonum pensylvanicum var. laevigatum Fernald |
| Authorship | Fernald |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Polygonum pensylvanicum Linnaeus |
| GUID | urn:lsid:ipni.org:names:206335-2 |
| Citation | 1917 Rhodora 19: 73 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Polygonum pensylvanicum var. laevigatum Fernald |
| Identification made in | [no date] (2), 1917 (1), 1963 (1), 1971 (5) |
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