Native to:
Albania,
Algeria,
Altay,
Amur,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Canary Is.,
Central European Russia,
China North-Central,
China South-Central,
Chita,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Madeira,
Magadan,
Manchuria,
Mongolia,
Morocco,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Pakistan,
Poland,
Portugal,
Primorye,
Romania,
Sakhalin,
Sardegna,
Sicilia,
South European Russia,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Uzbekistan,
West Siberia,
Xinjiang,
Yakutskiya,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Amsterdam-St.Paul Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arkansas,
Bermuda,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Chile Central,
Chile South,
Colorado,
Connecticut,
Costa Rica,
Crozet Is.,
Delaware,
District of Columbia,
East Himalaya,
Falkland Is.,
Greenland,
Hawaii,
Idaho,
Illinois,
Indiana,
Iowa,
Iraq,
Jamaica,
Kentucky,
Kerguelen,
Labrador,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Caledonia,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
Newfoundland,
Norfolk Is.,
North Carolina,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Prince Edward I.,
Québec,
Rhode I.,
South Australia,
South Carolina,
South Dakota,
South Georgia,
Svalbard,
Tasmania,
Tennessee,
Texas,
Utah,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yukon