Native to:
Afghanistan,
Albania,
Altay,
Amur,
Austria,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Russia,
China North-Central,
China South-Central,
Chita,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Finland,
France,
Germany,
Greece,
Hungary,
India,
Inner Mongolia,
Iran,
Iraq,
Irkutsk,
Italy,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Krasnoyarsk,
Krym,
Kuril Is.,
Lebanon-Syria,
Manchuria,
Mongolia,
Morocco,
Nepal,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Pakistan,
Poland,
Primorye,
Qinghai,
Romania,
Sakhalin,
South European Russia,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Transcaucasus,
Turkey,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yugoslavia
Introduced into:
Alberta,
Algeria,
British Columbia,
Colorado,
Connecticut,
Cyprus,
District of Columbia,
Føroyar,
Great Britain,
Greenland,
Iceland,
Idaho,
Illinois,
Indiana,
Iowa,
Ireland,
Kentucky,
Labrador,
Libya,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Dakota,
Nova Scotia,
Nunavut,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Dakota,
South Georgia,
Tunisia,
Utah,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming