This name is a synonym of Persicaria hydropiper (L.) Delarbre.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50132410) with original publication details: Fl. Pl. Herb. Chin. Bor.-Orient. 2: 43, 107 1959.
This name was in version 1 of The Plant List, record tro-50132410.