| Name | Polygonum watsonii Small |
| Authorship | Small |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Polygonum Linnaeus |
| GUID | urn:lsid:ipni.org:names:291876-2 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Polygonum watsonii Small |
| Identification made in | [no date] (1), 1937 (1) |
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