Bistorta (L.) Scop.

Native to:

Afghanistan, Alaska, Albania, Alberta, Aleutian Is., Altay, Amur, Arizona, Assam, Austria, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Central European Rus, China North-Central, China South-Central, China Southeast, Chita, Colorado, Czechoslovakia, Denmark, East European Russia, East Himalaya, Finland, France, Føroyar, Germany, Great Britain, Greece, Greenland, Hungary, Iceland, Idaho, Inner Mongolia, Iran, Iraq, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Krym, Kuril Is., Labrador, Laos, Magadan, Maine, Manchuria, Manitoba, Mexico Northeast, Michigan, Minnesota, Mongolia, Montana, Morocco, Myanmar, Nepal, Netherlands, Nevada, New Brunswick, New Hampshire, New Mexico, North Caucasus, North European Russi, Northwest European R, Northwest Territorie, Norway, Nunavut, Ontario, Oregon, Pakistan, Poland, Portugal, Primorye, Qinghai, Québec, Romania, Sakhalin, Saskatchewan, South Dakota, South European Russi, Spain, Svalbard, Sweden, Switzerland, Tadzhikistan, Thailand, Tibet, Transcaucasus, Turkey, Tuva, Ukraine, Utah, Uzbekistan, Vermont, Washington, West Himalaya, West Siberia, Wyoming, Xinjiang, Yakutskiya, Yugoslavia, Yukon

Introduced into:

Massachusetts, Newfoundland, Nova Scotia