Persicaria extremiorientalis (Vorosch.) Tzvelev Persicaria extremiorientalis (Vorosch.) Tzvelev in Novosti Sist. Vyssh. Rast. 24: 75. 1987 sec. The Plant List 2013=Persicaria maculosa subsp. hirticaulis (Danser) Knutsson in Nordic J. Bot. 16: 5. 1996 syn. sec. The Plant List 2013