Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Amur,
Andaman Is.,
Assam,
Austria,
Azores,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
China South-Central,
China Southeast,
Chita,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
East Himalaya,
Finland,
France,
Germany,
Great Britain,
Greece,
Hainan,
Hungary,
India,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Japan,
Jawa,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Madeira,
Malaya,
Manchuria,
Mongolia,
Morocco,
Myanmar,
Nansei-shoto,
Nepal,
Netherlands,
New South Wales,
Nicobar Is.,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Ogasawara-shoto,
Pakistan,
Philippines,
Poland,
Portugal,
Primorye,
Qinghai,
Queensland,
Romania,
Sakhalin,
Sardegna,
Sicilia,
South Australia,
South European Russi,
Spain,
Sri Lanka,
Sumatera,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tasmania,
Thailand,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Uzbekistan,
Victoria,
Vietnam,
West Himalaya,
West Siberia,
Western Australia,
Xinjiang,
Yakutskiya,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Arkansas,
British Columbia,
California,
Chile Central,
Chile South,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Florida,
Georgia,
Idaho,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
KwaZulu-Natal,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
North Dakota,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
South Carolina,
South Dakota,
Tennessee,
Texas,
Utah,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming