| Name | Polygonum cristatum Engelmann & A. Gray |
| Authorship | Engelmann & A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Polygonum Linnaeus |
| GUID | urn:lsid:ipni.org:names:206162-2 |
| Citation | 1845 Boston J. Nat. Hist. 5(2): 259 |
| Holdings | 58 Specimens held in the Harvard University Herbaria identified as Polygonum cristatum Engelmann & A. Gray |
| Identification made in | [no date] (56), 2008 (1), 2009 (1) |
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