Polygonum bistortoides var. oblongifolium (Meisner) H. St.John

Polygonum bistortoides var. oblongifolium (Meisner) H. St.John is a synonym sensu FNA Ed. Comm., 2005 of:

Bistorta bistortoides (Pursh) Small, an accepted species name sensu FNA Ed. Comm., 2005.