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International Plant Names Index
IPNI provides nomenclatural details for vascular plant names, including spelling, authorship, type, and publication information.
About International Plant Names Index
The International Plant Names Index (IPNI) is a database of nomenclatural data for the scientific names of vascular plants. It covers names from family to infraspecific ranks and records spelling, author, types, and first place and date of publication. It is produced by the Royal Botanic Gardens, Kew, the Harvard University Herbaria and the Australian National Herbarium, and is hosted by the Royal Botanic Gardens, Kew.
You can use the Search and Advanced Search tools to look up plant names and view their publication details. The site also allows registered users to add new names for new taxa, new combinations or replacement names, as well as published names not yet listed in IPNI. Records include links to protologues in the Biodiversity Heritage Library and to synonymy and native distribution data in Plants of the World Online.
The resource suits researchers, students and herbarium staff who work with plant nomenclature and need to check authorship and publication information.
Key features
- Search vascular plant names from family to infraspecific ranks
- View spelling, author, type and publication details
- Advanced Search for plant name queries
- Register new taxon, combination or replacement name
- Links to protologues via Biodiversity Heritage Library
- Links to synonymy and distribution via Plants of the World Online
Best for: Researchers, students and herbarium staff who need plant name authorship and publication details.
Good for
- Covers spelling, authorship, types and publication data
- Produced by Kew, Harvard and Australian National Herbarium
- New records added daily
- Links to protologues and Plants of the World Online
Watch out for
- Limited to vascular plants from family to infraspecific ranks
- Taxonomic data must be viewed in Plants of the World Online
International Plant Names Index at a glance
- Website
- ipni.org
- Category
- Research & Data › Climate & Environmental Data
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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International Plant Names Index FAQ
What does IPNI provide?
IPNI provides nomenclatural data, including spelling, author, types and first place and date of publication, for scientific names of vascular plants.
Can I register a plant name in IPNI?
Yes. You can register a name new to science or a published name not yet in IPNI, including new taxa, new combinations and replacement names.
Where can I find taxonomic data like synonymy?
IPNI directs users to Plants of the World Online for taxonomic data, including synonymy and native distribution.
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