Native to:
Belgium,
France,
Germany,
Great Britain,
Netherlands,
Spain
Introduced into:
Austria,
Baltic States,
British Columbia,
Bulgaria,
Central European Russia,
Colorado,
Connecticut,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
Hungary,
Iceland,
Illinois,
Indiana,
Iowa,
Ireland,
Italy,
Japan,
Kazakhstan,
Korea,
Krym,
Labrador,
Maine,
Manchuria,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Montana,
Myanmar,
New Brunswick,
New Hampshire,
New Jersey,
New York,
North Carolina,
Norway,
Nova Scotia,
Ohio,
Ontario,
Pennsylvania,
Poland,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South European Russia,
Sweden,
Switzerland,
Tadzhikistan,
Tennessee,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uzbekistan,
Vermont,
Virginia,
Washington,
West Himalaya,
West Virginia,
Wisconsin,
Wyoming,
Yugoslavia