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Europe Middle Europe Switzerland Southeastern Europe Albania Bulgaria Greece Italy Kriti Romania Yugoslavia Southwestern Europe France Spain Introduced into Africa Macaronesia Madeira Asia-Temperate Eastern Asia Japan Asia-Tropical Indian Subcontinent Pakistan Australasia Australia Tasmania Europe Eastern Europe Baltic States Belarus Central European Russia Ukraine Middle Europe Austria Belgium Czechoslovakia Germany Hungary Northern Europe Denmark Great Britain Ireland Norway Sweden Southwestern Europe Corse Northern America Eastern Canada Nova Scotia Ontario Québec North-Central U.S.A. Illinois Northeastern U.S.A. Connecticut Indiana Masachusettes Michigan New Hampshire New York Ohio Pennsylvania Rhode I. Vermont Northwestern U.S.A. Colorado Idaho Oregon Washington Southeastern U.S.A. Alabama Delaware Kentucky Maryland Tennessee Southwestern U.S.A. California Utah Western Canada British Columbia Manitoba Southern America Southern South America Argentina South