• International Association for Plant Taxonomy
  https://www.iapt-taxon.org/index_layer.php
• American Society of Plant Taxonomists
  https://www.aspt.net
• Botanical Society of America
  https://www.botany.org
• The American Fern Society
  https://www.amerfernsoc.org
• Botanical Society of China 中國植物學會
  https://www.botany.org.cn/CN/model/index.shtml
• Taiwan Society of Plant Systematics
  https://www.tsps.org.tw/reference.htm
• The Systematics Association
  https://www.systass.org
• Biodiversity Information standards
  https://www.tdwg.org

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