Native to:
Alaska,
Aleutian Is.,
Algeria,
Antipodean Is.,
Argentina Northwest,
Argentina South,
Austria,
Baltic States,
Belarus,
Bolivia,
British Columbia,
Buryatiya,
California,
Central European Russia,
Chile Central,
Chile South,
Colombia,
Costa Rica,
Crozet Is.,
Czechia-Slovakia,
Denmark,
DR Congo,
East European Russia,
Ecuador,
Ethiopia,
Falkland Is.,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greenland,
Heard-McDonald Is.,
Iceland,
Idaho,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kenya,
Kerguelen,
Khabarovsk,
Kuril Is.,
Labrador,
Macquarie Is.,
Magadan,
Maine,
Manitoba,
Marion-Prince Edward Is.,
Massachusetts,
Mexico Central,
Mexico Northwest,
Montana,
Morocco,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
NW. Balkan Pen.,
Ontario,
Oregon,
Peru,
Poland,
Primorye,
Prince Edward I.,
Québec,
Rwanda,
Sakhalin,
South Georgia,
Spain,
Sweden,
Switzerland,
Tanzania,
Tunisia,
Uganda,
Uruguay,
Utah,
Vermont,
Washington,
Wyoming,
Yakutiya,
Yukon
Introduced into:
Venezuela