Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Argentina South,
Arizona,
Arkansas,
Assam,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Russia,
Chile Central,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
District of Columbia,
East Aegean Is.,
East European Russia,
East Himalaya,
Falkland Is.,
Finland,
Florida,
France,
Føroyar,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Hungary,
Iceland,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Jawa,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Labrador,
Lebanon-Syria,
Louisiana,
Magadan,
Maine,
Manchuria,
Manitoba,
Maryland,
Mexican Pacific Is.,
Mexico Northeast,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Myanmar,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Poland,
Portugal,
Primorye,
Qinghai,
Québec,
Romania,
Sakhalin,
Saskatchewan,
Sicilia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sumatera,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Argentina Northwest,
Bolivia,
Connecticut,
Massachusetts,
Mexico Southwest