Welcome to the International Plant Names Index (IPNI) produced by a collaboration between The Royal Botanic Gardens, Kew, The Harvard University Herbaria, and The Australian National Herbarium, hosted by the Royal Botanic Gardens, Kew. IPNI provides nomenclatural information (spelling, author, types and first place and date of publication) for the scientific names of Vascular Plants from Family down to infraspecific ranks. You can search for plant names, authors or publications in the search box above. Click the down arrow for advanced search options. New records are added daily, and the IPNI team are continuously working to improve data standardization.

IPNI provides links to protologues in online articles or page scans from the Biodiversity Heritage Library as well as links to taxonomic data (synonymy and native distribution) through the Plants of the World Online.

If you have any questions, comments or feedback the team would be happy to hear from you by email at ipnifeedback@kew.org