Native to:
Albania,
Austria,
Baleares,
Belgium,
Bulgaria,
Corse,
France,
Germany,
Great Britain,
Hungary,
Italy,
Netherlands,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
Spain,
Switzerland,
Ukraine,
Yugoslavia
Introduced into:
Alabama,
Arkansas,
Baltic States,
British Columbia,
Connecticut,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Finland,
Georgia,
Idaho,
Illinois,
Indiana,
Iowa,
Ireland,
Kansas,
Kentucky,
Louisiana,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
Nebraska,
New Brunswick,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand South,
Newfoundland,
North Carolina,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Québec,
Rhode I.,
South Australia,
South Carolina,
South Dakota,
South European Russi,
Sweden,
Tasmania,
Tennessee,
Texas,
Utah,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Wisconsin