⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-26002748, with some changes.
This name is a synonym of Polygonum hydropiperoides var. setaceum .
The record derives from Tropicos which reports it as a synonym (record 26002748
) with original publication details: Fl. S.E. U.S. 378 378 1903.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:190849-2
.