Native to:
Afghanistan,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Arizona,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
China North-Central,
China Southeast,
Chita,
Colorado,
Connecticut,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
East European Russia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Illinois,
Indiana,
Iowa,
Iran,
Irkutsk,
Italy,
Japan,
Kazakhstan,
Kentucky,
Kenya,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Mongolia,
Montana,
Morocco,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Ohio,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Poland,
Portugal,
Québec,
Romania,
Rwanda,
Saskatchewan,
Sicilia,
South Dakota,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tanzania,
Tennessee,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Utah,
Uzbekistan,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yugoslavia,
Yukon,
Zaïre
Introduced into:
Cape Provinces,
Kuril Is.,
KwaZulu-Natal,
Lesotho,
New South Wales,
Northern Provinces,
Primorye,
Sakhalin,
Vermont,
Victoria