⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2676830, with some changes.
This name is a synonym of Persicaria bistorta (L.) Samp..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: J. Jap. Bot. 47: 354 1972.