Native to:
Afghanistan,
Alaska,
Albania,
Aleutian Is.,
Algeria,
Altay,
Amur,
Assam,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Labrador,
Lebanon-Syria,
Magadan,
Maine,
Manchuria,
Mongolia,
Morocco,
Myanmar,
Nepal,
Netherlands,
New Brunswick,
Newfoundland,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Nova Scotia,
Pakistan,
Poland,
Portugal,
Primorye,
Qinghai,
Québec,
Romania,
Sakhalin,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Thailand,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Uzbekistan,
Vietnam,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yugoslavia
Introduced into:
Azores,
Baleares,
California,
Canary Is.,
Chatham Is.,
Colombia,
Costa Rica,
Cuba,
Cyprus,
Idaho,
Illinois,
Jawa,
Kermadec Is.,
Massachusetts,
Michigan,
Montana,
New Jersey,
New South Wales,
New York,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
South Australia,
Tasmania,
Victoria,
Washington,
Western Australia