The Biota of North America Program

North American Vascular Flora





Taxonomic Data Center

 Query (TDC-QPage 




North American Plant Atlas





 Customized Geographic

Database (CGDPage 




BONAP Botanical Garden


Optimal Browsers for Viewing

North American Plant Atlas (NAPA)


U.S. County-Level Distributions:

Species/Generic Maps

   -List Plants by Genera

  -List Plants by Traditional                     Families

  -List Plants by Modern Families

  -List Plants Phylogenetically


U.S. State-Level Distributions:

Species/Generic Maps

   -List Plants by Genera

   -List Plants by Traditional   


   -List Plants by Modern Families

   -List Plants Phylogenetically


U.S. State-Level Distributions:

Family Maps

   -Traditional Family Maps

     -Modern Family Maps


Specialty Maps

   -Density Gradient Maps

   -Largest N.A. Genera

   -Largest N.A. Families

   -Floristic Tension Zones

   -Soil Types

   -Climate Types

    Most Widespread/Thoroughly 

    Distributed Species Maps

       -U.S View

       -North American View


Report a Problem or Comment



News and Notes









Images on Flickr


References and






NOTICE: BONAP is pleased to present the 2014 edition of our TDC and NAPA web pages. These pages represent reasonably complete, accurate and current assessments of the entire vascular flora of the North American continent, north of Mexico. Through the combined efforts of BONAP’S thousands of contributors and volunteers, we have produced a community-wide, free access product to serve the needs of the botanical community. With clear vision and common goals, the completion of this work demonstrates the ability of the scientific community to summarize, verify, and clarify a subject as vastly complex as the North American vascular flora. Although we make no assertions that every datum is accurate, we are pleased to bring our efforts to this stage of completion, and to make them publically available. We welcome any corrections or suggestions you might have. –JTK (11/17/2014)

Taxonomic Data Center (TDC)

Introducing  BONAP

Help Index

How can I contribute to BONAP?

External Resources

 BONAP's Web Resources

-BONAP in the Federal                  Register

-Announcement: BONAP             and  the National Wetlands         Plant List 

-BONAP's Facebook Page

-BONAP's References

  (Polish Translation) 

 -BONAP's News and Notes 

   (Ukrainian Translation from         Science Project STD) 

 Selected Institutions and  Organizations Using  BONAP Data

   Consortium of Northeastern       Herbaria

  Early Detection & Distribution  Mapping System (EDDMapS)

   Germplasm Resources                    Information Network (GRIN)

   Harvard University Herbaria
   Integrated Taxonomic                     Information Systems (ITIS)
   Minnesota Wildflowers
   The National Wetlands Plant       List
   Native Wildflower Seeds and      Plants Nursery (Ion            Exchange, Inc.)
   New England Botanical Club       (NEBC)
   New England Wild Flower       Society
   North Creek Nurseries
   Prairie Moon Nursery, Inc.
   Southwest Wildflowers
  University of California,       Berkeley, The Jepson Online       Interchange California       Floristics