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
* France, Portugal, Spain.
- Regional: Eastern Europe
* Belarus, Baltic States, North European Russia, Northwest European Russia.
- Continental: Africa
- Regional: Northern Africa
* Morocco.
- Regional: Macaronesia
* Azores, Madeira.
- 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
* Kenya, Tanzania, Uganda.
- 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
* St. Helena.
- Regional: Western Indian Ocean
* Comoros, Mauritius, Madagascar, Réunion, Rodrigues.
- Continental: Asia-Temperate
- Regional: Siberia
* Chita, Yakutiya.
- Regional: Russian Far East
* Amur, Kamchatka, Khabarovsk, Kuril Islands, Magadan, Primorye, Sakhalin.
- Regional: Arabian Peninsula
* Oman.
- 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
* New Guinea.
- 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
* Vanuatu.
- Regional: South-Central Pacific
* Tubuai Islands.
- Regional: North-Central Pacific
* Hawaii.
- 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.
* New Mexico, Texas.
- 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
* Falkland Islands.
