Native to:
Afghanistan,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Arizona,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Russia,
China North-Central,
Chita,
Colorado,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
East Himalaya,
Ethiopia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Kuril Is.,
Labrador,
Lebanon-Syria,
Magadan,
Maine,
Manchuria,
Manitoba,
Mexico Northwest,
Michigan,
Minnesota,
Mongolia,
Montana,
Morocco,
Nansei-shoto,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Mexico,
New South Wales,
Newfoundland,
North Caucasus,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Ontario,
Oregon,
Pakistan,
Poland,
Portugal,
Primorye,
Québec,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Sicilia,
South Dakota,
South European Russia,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tasmania,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Uganda,
Ukraine,
Utah,
Uzbekistan,
Victoria,
Washington,
West Himalaya,
West Siberia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Alabama,
Amsterdam-St.Paul Is.,
Argentina South,
Arkansas,
Canary Is.,
Cape Provinces,
Chile Central,
Chile South,
China Southeast,
Connecticut,
Delaware,
District of Columbia,
Dominican Republic,
Georgia,
Haiti,
Iceland,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Kerguelen,
Krym,
Madeira,
Maryland,
Massachusetts,
Mississippi,
Missouri,
Nebraska,
New Jersey,
New York,
New Zealand North,
New Zealand South,
North Carolina,
Ohio,
Oklahoma,
Pennsylvania,
Prince Edward I.,
Rhode I.,
Réunion,
South Australia,
South Carolina,
Sri Lanka,
Svalbard,
Tennessee,
Tristan da Cunha,
Vermont,
Virginia,
West Virginia