Reference: Brummitt, R.K. (2001) TDGW - World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Continental: Europe
Regional: Northern Europe
Denmark, Finland, Føroyar, Great Britain, Ireland, Norway, Sweden.
Regional: Middle Europe
Belgium, Germany, Netherlands, Poland.
Regional: Southwestern Europe
Regional: Eastern Europe
Belarus, Baltic States, North European Russia, Northwest European Russia.
Continental: Africa
Regional: Northern Africa
Regional: Macaronesia
Regional: West Tropical Africa
Benin, Burkina, Ghana, Guinea, Ivory Coast, Mali, Nigeria, Niger, Senegal, Sierre Leone, Togo.
Regional: West-Central Tropical Africa
Burundi, Central African Republic, Cameroon, Congo, Equatorial Guinea, Gabon, Gulf of Guinea Islands, Rwanda, Zaïre.
Regional: Northeast Tropical Africa
Chad, Eritrea, Ethiopia, Somalia, Sudan.
Regional: East Tropical Africa
Regional: South Tropical Africa
Angola, Malawi, Mozambique, Zambia, Zimbabwe.
Regional: Southern Africa
Botswana, Cape Provinces, Caprivi Strip, Lesotho, Namibia, KwaZulu-Natal, Free State, Swaziland, Northern Provinces.
Regional: Middle Atlantic Ocean
Regional: Western Indian Ocean
Comoros, Mauritius, Madagascar, Réunion, Rodrigues.
Continental: Asia-Temperate
Regional: Siberia
Regional: Russian Far East
Amur, Kamchatka, Khabarovsk, Kuril Islands, Magadan, Primorye, Sakhalin.
Regional: Arabian Peninsula
Regional: China
China South-Central, Hainan, Manchuria, China North-Central, China Southeast, Tibet, Chile Central, Chile South.
Regional: Eastern Asia
Japan, Korea, Nansei-shoto, Ogasawara-shoto, Taiwan.
Continental: Asia-Tropical
Regional: Indian Subcontinent
Assam, Bangladesh, East Himalaya, India, Nepal, Sri Lanka, West Himalaya.
Regional: Indo-China
Andaman Islands, Cambodia, Laos, Myanmar, Nicobar Islands, Thailand, Vietnam.
Regional: Malesia
Borneo, Jawa, Lesser Sunda Islands, Malaya, Philippines, Sulawesi, Sumatera.
Regional: Papuasia
Regional: Australia
Norfolk Islands, New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria, Western Australia.
Regional: New Zealand
Antipodean Islands, Chatham Islands, Kermadec Islands, New Zealand North, New Zealand South.
Continental: Pacific
Regional: Southwestern Pacific
Regional: South-Central Pacific
Regional: North-Central Pacific
Regional: Subarctic America
Nunavut, Northwest Territories,
Continental: Northern America
Regional: Western Canada
Alberta, British Columbia, Manitoba, Saskatchewan.
Regional: Eastern Canada
Labrador, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Isle, Québec.
Regional: Northwestern U.S.A.
Colorado, Idaho, Montana, Oregon, Washington, Wyoming.
Regional: North-Central U.S.A.
Illinois, Iowa, Kansas, Minnesota, Missouri, North Dakota, Nebraska, Oklahoma, South Dakota, Wisconsin.
Regional: Northeastern U.S.A.
Connecticut, Delaware, Indiana, Maine, Massachusetts, Michigan, Maryland, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Islands, Vermont, West Virginia.
Regional: Southwestern U.S.A.
Arizona, California, Nevada, Utah.
Regional: South-Central U.S.A.
Regional: Southeastern U.S.A.
Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, District of Columbia.
Regional: Mexico
Georgia, Mexico Central, Mexico Northeast, Mexico Gulf, Mexican Pacific Islands, Mexico Northwest, Mexico Southwest, Mexico Southeast, North Carolina, South Carolina, Tennessee.
Continental: Southern America
Regional: Central America
Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama.
Regional: Caribbean
Bahamas, Cuba, Dominican Republic, Haiti, Jamaica, Leeward Islands, Puerto Rico, Turks-Caicos Islands, Trinidad-Tobago, Windward Islands.
Regional: Northern South America
French Guiana, Suriname, Venezuela.
Regional: Western South America
Bolivia, Colombia, Ecuador, Galápagos, Peru.
Regional: Brazil
Brazil West-Central, Brazil Northeast, Brazil Southeast, Brazil North, Brazil South.
Regional: Southern South America ‘‘‘
Argentina Northeast, Argentina South, Argentina Northwest, Chile Central, Chile North, Chile South, Juan Fernández Islands, Paraguay, Uruguay.
Continental: Antartic
Regional: Subantarctic Islands