pygmy smartweed, small water pepper and swamp willow weed (Persicaria minor)

Persicaria minor is a species in the Persicaria genus. It is commonly known as pygmy smartweed, small water pepper and swamp willow weed This name is accepted name for the species in the family Polygonaceae subfamily Polygonoideae, tribe Persicariae, . . This species is found in Altay, Amur, Assam, Austria, Baltic States, Bangladesh, Belarus, Belgium, Bulgaria, Buryatiya, Caroline Is., Central European Rus, Chita, Czechoslovakia, Denmark, East European Russia, Finland, France, Germany, Great Britain, Greece, Hungary, Iran, Ireland, Irkutsk, Italy, Kazakhstan, Khabarovsk, Kirgizstan, Krasnoyarsk, Krym, Laos, Malaya, Marianas, Nepal, Netherlands, New Guinea, North Caucasus, North European Russi, Northwest European R, Norway, Pakistan, Philippines, Poland, Primorye, Romania, Solomon Is., South European Russi, Spain, Sri Lanka, Sweden, Switzerland, Tadzhikistan, Taiwan, Thailand, Transcaucasus, Turkey, Tuva, Ukraine, Uzbekistan, Vietnam, West Himalaya, West Siberia, Yugoslavia.