Taxonomic data providers

TNRS version 5.0 consults the following sources of nomenclatural and taxonomic information:

  • Missouri Botanical Gardens Tropicos database - TROPICOS

    The Missouri Botanical Garden''s Tropicos database links over 1.33M scientific names with over 4.87M specimens and over 685K digital images. The data includes over 150K references from over 52.6K publications offered as a free service to the world''s scientific community.

    Date Accessed: 2020-05-30

  • The Plant List (ver. 1.1) - TPL

    The Plant List (TPL) was a working list of all known plant species produced by the botanical community in response to Target 1 of the 2002-2010 Global Strategy for Plant Conservation (GSPC). TPL has been static since 2013, but was used as the starting point for the Taxonomic Backbone of the World Flora Online (WFO), and updated information can be found at

    Date Accessed: 2020-06-25

  • USDA Plants - USDA

    The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.

    Date Accessed: 2020-07-03

Reporting errors

Please contact us at support@tnrs.biendata.orgif you encounter errors or have questions regarding taxonomic opinions transmitted by the TNRS. However, unless the error is due to a bug in the TNRS, we will generally recommend you contact our taxonomic data providers directly.