a Eurasian perennial herb(Polygonum bistorta) having cylindrical spikes of usually pink flowers and a rhizome used as an astringent in folk medicine

• 一种欧亚产多年生草本植物圆穗蓼，通长生有圆柱形穗状花序的粉色花朵和民间医学中用于止血药的根茎