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About IPNI

The International Plant Names Index (IPNI) is a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes. Its goal is to eliminate the need for repeated reference to primary sources for basic bibliographic information about plant names. The data are freely available and are gradually being standardized and checked. IPNI will be a dynamic resource, depending on direct contributions by all members of the botanical community.

IPNI is the product of a collaboration between The Royal Botanic Gardens, Kew, The Harvard University Herbaria, and the Australian National Herbarium



  • Melbourne Code available online.

  • From 1 January 2012 electronic material published online in Portable Document Format (PDF) with an International Standard Serial Number (ISSN) or an International Standard Book Number (ISBN) constitutes effective publication.

    We want to make sure that IPNI captures all relevant nomenclatural novelties, whether published online or in printed form.

    IPNI users can help. Let us know if you publish or find names in an online publication by sending us a link to the relevant site.

  • To help you to quickly find information on authors, many new links have been created from author records to TL-2 page in BHL. Try it out. Click on the link in this record.

  • Missing protologues - can you help us find some of these?



  • Want to see new names added since last year, last month, last week or yesterday? You can do this by searching by additional terms. Search must be limited by at least one term, like family. Find out more.

  • Use of wildcards when searching the Authors Database is strongly advised, especially if including a forename initial in the search. If your search is unsuccessful, try adding a wildcard to both ends of the surname.

  • What appear to be duplicate records in primary search results often hold different information when the full records are viewed.


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Last updated 01 July 2014

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