| Name | Polygonum tenue var. protrusum Fernald |
| Authorship | Fernald |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Polygonum tenue Michaux |
| GUID | urn:lsid:ipni.org:names:206438-2 |
| Citation | 1942 Rhodora 44: 393 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Polygonum tenue var. protrusum Fernald |
| Identification made in | [no date] (2) |
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