Native to:
Afghanistan,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Amur,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
China South-Central,
Chita,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Inner Mongolia,
Iran,
Iraq,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Lebanon-Syria,
Magadan,
Maine,
Manchuria,
Manitoba,
Michigan,
Mongolia,
Morocco,
Nepal,
Netherlands,
New Brunswick,
Newfoundland,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Ontario,
Oregon,
Pakistan,
Palestine,
Poland,
Portugal,
Primorye,
Qinghai,
Québec,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Saudi Arabia,
Sicilia,
Sinai,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
Washington,
West Himalaya,
West Siberia,
Wisconsin,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Alabama,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Azores,
Baleares,
Bolivia,
Borneo,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Canary Is.,
Cape Verde,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
China North-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
Cook Is.,
Costa Rica,
Cuba,
Delaware,
Dominican Republic,
Ecuador,
El Salvador,
Ethiopia,
Føroyar,
Georgia,
Guatemala,
Hainan,
Honduras,
Iceland,
Idaho,
Illinois,
India,
Indiana,
Iowa,
Ireland,
Jawa,
Kansas,
Kentucky,
Kriti,
Labrador,
Louisiana,
Madeira,
Malaya,
Maryland,
Massachusetts,
Mauritius,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Minnesota,
Mississippi,
Missouri,
Montana,
Mozambique,
Myanmar,
Nebraska,
Nevada,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
North Carolina,
North Dakota,
Northern Territory,
Northwest Territorie,
Nova Scotia,
Ohio,
Oklahoma,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Prince Edward I.,
Queensland,
Rhode I.,
Rwanda,
Réunion,
South Australia,
South Carolina,
South Dakota,
Sri Lanka,
Sulawesi,
Sumatera,
Tasmania,
Tennessee,
Trinidad-Tobago,
Tubuai Is.,
Uruguay,
Utah,
Venezuela,
Vermont,
Victoria,
Vietnam,
Virginia,
West Virginia,
Western Australia,
Wyoming