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List of codes used in the World Geographical Scheme for Recording Plant Distributions

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The World Geographical Scheme for Recording Plant Distributions (WGSRPD) is a biogeographical system developed by the international Biodiversity Information Standards (TDWG) organization, formerly the International Working Group on Taxonomic Databases. The system provides clear definitions and codes for recording plant distributions at four scales or levels, from "botanical continents" down to parts of large countries. Current users of the system include the International Union for Conservation of Nature (IUCN), and the Germplasm Resources Information Network (GRIN).[1] Plants of the World Online uses Kew's data sources,[2] and hence also uses the WGSRPD for distributions.

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Codes

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The table is arranged in the systematic order used in the WGSRPD. The levels used in the scheme are:

  1. Nine botanical continents; the code consists of a single digit
  2. Regions – each botanical continent is divided into between two and ten sub-continental regions; a two-digit code is used for regions, in which the first digit is the continent
  3. Areas or "botanical countries" – most regions are subdivided into units, generally equating to a political country, but large countries may be split or outlying areas omitted; a three-letter code is used for areas
  4. "Basic recording units" – the lowest level is only used for very large "botanical countries", subdividing them into states, provinces or islands on purely political grounds; the full code is made up of a two-letter code appended to the corresponding area code
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