- The International Plant Names Index (IPNI)
https://www.ipni.org - Tropicos, Missouri Botanical Garden
https://www.tropicos.org/ - The Plant List
https://www.theplantlist.org - Index Nominum Genericorum (ING)
https://botany.si.edu/ing/ - Vascular Plant Families and Genera
https://data.kew.org/vpfg1992/genlist.html#F-A - Taxonomic Name Resolution Service, iPlant Collaborative
https://tnrs.iplantcollaborative.org/instructions.html - Index Hepaticarum (liverworts and hornworts)
https://www.ville-ge.ch/musinfo/bd/cjb/hepatic/index.php - Index Nominum Algarum
https://ucjeps.berkeley.edu/INA.html - Fungal names and Indexes
https://fungalinfo.im.ac.cn/fungalname/fungalname.html
https://www.indexfungorum.org
https://www.mycobank.org - PlantSystematics
https://www.plantsystematics.org