Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Amur,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Burundi,
Buryatiya,
California,
Canary Is.,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Connecticut,
Corse,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Finland,
France,
Georgia,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Lebanon-Syria,
Libya,
Louisiana,
Madeira,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Myanmar,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Pennsylvania,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Rwanda,
Sakhalin,
Sardegna,
Saskatchewan,
Sicilia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Tuva,
Uganda,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Zaïre
Introduced into:
Angola,
Argentina South,
Cape Provinces,
Chile Central,
Free State,
KwaZulu-Natal,
New South Wales,
New Zealand North,
New Zealand South,
Northern Provinces,
Queensland,
South Australia,
Tasmania,
Victoria,
Western Australia,
Zimbabwe