| Name | Polygonum natans (Michaux) Eaton | 
| Authorship | (Michaux) Eaton | 
| Rank | Species | 
| NomenclaturalStatus | Unknown | 
| Placed in | Polygonum Linnaeus | 
| Contains | Polygonum natans f. hartwightii (A. Gray) Stanford | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Polygonum natans (Michaux) Eaton | 
| Identification made in | [no date] (2) |