- Europe
- Northern Europe
- Denmark, Finland, Great Britain, Iceland, Ireland, Norway, Sweden.
- Middle Europe
- Austria, Belgium, Czechoslovakia, Germany, Hungary, Netherlands, Poland, Switzerland.
- Southwestern Europe
- Baleares, Corse, France, Portugal, Sardegna, Spain.
- Southeastern Europe
- Albania, Bulgaria, Greece, Italy, Kriti, Romania, Sicilia, Turkey-in-Europe, Yugoslavia.
- Eastern Europe
- Belarus, Baltic States, Krym, Central European Russia, East European Russia, North European Russia, South European Russia, Northwest European Russia, Ukraine.
- Africa
- Northern Africa
- Algeria, Egypt, Libya, Morocco, Tunisia.
- Macaronesia
- Northeast Tropical Africa
- East Tropical Africa
- Southern Africa
- Botswana, Cape Provinces, Namibia, Free State, Northern Provinces.
- Western Indian Ocean
- Asia-Temperate
- Siberia
- Altay, Buryatiya, Chita, Irkutsk Krasnoyarsk, Tuva, West Siberia.
- Russian Far East
- Kamchatka, Khabarovsk, Kuril Islands, Primorye, Sakhalin.
- Middle Asia
- Kazakhstan, Kirgizstan, Turkmenistan, Tadzhikistan, Uzbekistan.
- Caucasus
- North Caucasus, Transcaucasus.
- Western Asia
- Afghanistan, Cyprus, East Aegean Islands, Iran, Iraq, Lebanon-Syria, Palestine, Turkey.
- Arabian Peninsula
- Gulf States, Saudi Arabia, Yemen.
- China
- China South-Central, Inner Mongolia, Manchuria, China North-Central, Qinghai, China Southeast, Tibet, Xinjiang.
- Mongolia
- Eastern Asia
- Japan, Korea, Nansei-shoto, Taiwan.
- Asia-Tropical
- Indian Subcontinent
- Assam, Bangladesh, India, Nepal, Pakistan, West Himalaya.
- Indo-China
- Australasia
- Australia
- New South Wales, South Australia.
- New Zealand
- New Zealand North, New Zealand South.
- Northern America
- Subarctic America
- Western Canada
- Alberta, British Columbia, Manitoba, Saskatchewan.
- Eastern Canada
- New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Isle, Québec.
- Northwestern U.S.A.
- Colorado, Idaho, Montana, Oregon, Washington, Wyoming.
- North-Central U.S.A.
- Illinois, Iowa, Kansas, Minnesota, Missouri, North Dakota, Nebraska, Oklahoma, South Dakota, Wisconsin.
- Northeastern U.S.A.
- Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Islands, Vermont, West Virginia.
- Southwestern U.S.A.
- Arizona, California, Nevada, Utah.
- South-Central U.S.A.
- Southeastern U.S.A.
- Alabama, Arkansas, Delaware, Florida, Kentucky, Louisiana, Maryland.
References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
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