Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
California,
Cape Provinces,
Central European Rus,
Connecticut,
Corse,
Cyprus,
Czechoslovakia,
Delaware,
District of Columbia,
East Aegean Is.,
East European Russia,
Egypt,
Finland,
Florida,
France,
Georgia,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Indiana,
Iowa,
Iran,
Ireland,
Italy,
Kansas,
Kazakhstan,
Kirgizstan,
Krasnoyarsk,
Kriti,
Krym,
KwaZulu-Natal,
Lebanon-Syria,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
Morocco,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New York,
Newfoundland,
North Carolina,
North Dakota,
North European Russi,
Northwest European R,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Poland,
Portugal,
Québec,
Rhode I.,
Romania,
Sardegna,
Saskatchewan,
Sicilia,
Sinai,
South Carolina,
South Dakota,
South European Russi,
Spain,
Switzerland,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Virginia,
Washington,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yugoslavia,
Yukon
Introduced into:
Amur,
Argentina Northeast,
Argentina South,
Ascension,
Azores,
Chile Central,
Chile South,
Colorado,
Denmark,
Illinois,
Kentucky,
Khabarovsk,
Labrador,
Magadan,
New Zealand North,
New Zealand South,
Norway,
Primorye,
St.Helena,
Sweden,
Tasmania,
Uruguay,
Yakutskiya