Doubtfully present in:
Romania
Native to:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Amur,
Austria,
British Columbia,
Buryatiya,
Chita,
Connecticut,
Czechia-Slovakia,
Delaware,
District of Columbia,
East European Russia,
Finland,
Føroyar,
Georgia,
Germany,
Great Britain,
Hungary,
Iceland,
Illinois,
Indiana,
Iowa,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kentucky,
Khabarovsk,
Korea,
Krasnoyarsk,
Kuril Is.,
Magadan,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
New Jersey,
New York,
North Carolina,
North European Russia,
Northwest Territories,
Norway,
Ohio,
Ontario,
Pennsylvania,
Primorye,
Sakhalin,
Saskatchewan,
Sweden,
Taiwan,
Tennessee,
Ukraine,
Vermont,
Virginia,
Washington,
West Siberia,
West Virginia,
Wisconsin,
Yakutiya,
Yukon
Extinct in:
Poland