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Africa Macaronesia Azores Canary Is. Madeira Northern Africa Algeria Morocco Tunisia Asia-Temperate Arabian Peninsula Saudi Arabia Caucasus North Caucasus Transcaucasus Siberia Altay West Siberia Yakutskiya Western Asia East Aegean Is. Iran (Doubtful) Lebanon-Syria Turkey Europe Eastern Europe Baltic States Belarus Central European Russia East European Russia North European Russia Northwest European Russia South European Russia Ukraine Middle Europe Austria Belgium Czechoslovakia Germany Hungary Netherlands Poland Switzerland Northern Europe Denmark Finland Føroyar Great Britain Ireland Norway Sweden Southeastern Europe Albania Bulgaria Greece Italy Kriti Romania Sicilia Turkey-in-Europe Yugoslavia Southwestern Europe Corse France Portugal Sardegna Spain Introduced into Asia-Temperate Eastern Asia Japan Taiwan Australasia Australia Tasmania New Zealand Antipodean Is. Kermadec Is. New Zealand North New Zealand South Europe Northern Europe Iceland Northern America Eastern Canada New Brunswick Newfoundland Nova Scotia Ontario Prince Edward I. Québec Mexico Mexico Central North-Central U.S.A. Illinois Iowa Kansas Missouri Nebraska Oklahoma Wisconsin Northeastern U.S.A. Connecticut Indiana Maine Masachusettes Michigan New Hampshire New Jersey New York Ohio Pennsylvania Rhode I. Vermont West Virginia Northwestern U.S.A. Colorado Idaho Montana Oregon Washington South-Central U.S.A. Texas Southeastern U.S.A. Alabama Arkansas Delaware District of Columbia Florida Georgia Kentucky Louisiana Maryland Mississippi North Carolina South Carolina Tennessee Virginia Southwestern U.S.A. California Nevada Subarctic America Alaska Greenland Western Canada British Columbia Southern America Southern South America Argentina Northeast Argentina South