| Name | Polygonum exsertum Small |
| Authorship | Small |
| Rank | Species |
| Placed in | Polygonum Linnaeus |
| Citation | 1894 Bull. Torrey Bot. Club 21(4): 172-173, pl. 195 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Polygonum exsertum Small |
| Identification made in | [no date] (3), 2018 (2) |
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