Reynoutria ciliinervis

Reynoutria ciliinervis is a species of flowering plant in the family Polygonaceae, native to Korea and China – north-central China, south-central China, northeast China (Manchuria) and Qinghai. It was first described by Takenoshin Nakai in 1914 (as "Pleuropterus ciliinervis") and transferred to "Reynoutria" by Harold Norman Moldenke in 1941. It has also been placed in "Fallopia" and "Polygonum".