General
- The Office of Research integrity, US HHS
- National Center for Professional and Research Ethics
- Human Subjects Protections Training, NIH
Botanical
- The Plant List
- Tropicos
- World checklist of selected plant families (Kew Royal Botanical Garden)
- Germplasm Resources Information Network (GRIN database)
- Angiosperm phylogeny
- The Chrysler Herbarium
- Plants For A Future
- The International Plant Names Index
- Dr. Duke's Phytochemical and Ethnobotanical Databases
- Plantarium
- Flora of vascular plants of Central Russia
- Vascular plants of Russia and adjacent states (the former USSR)