Map used by permission from BONAP

The Biota of North America Program (BONAP) maintains relatively complete phytogeographic and related botanical databases for all free-living vascular plants in North America (north of Mexico). For over four decades, BONAP has worked collaboratively with many federal and state government agencies, private groups and individual specialists across the continent to produce and edit our databases. Therefore, we feel that our county-level database has matured sufficiently to allow us to post, for the first time, all of our integrated county-level maps of the North American ferns and allies, conifers and flowering plants in one place. Although these maps must still be considered DRAFT releases, inasmuch as in 2009 alone, nearly 952,000 new county-level records were added, we wanted to provide members of the North American plant community an opportunity to view and critique all 21,500 species-level maps. BONAP plans to provide updates of these maps at regular intervals subsequent to this January 2010 initial release.
Species present in state and native
Species present and not rare
Species extinct
Species native, but adventive in state
Species present in state and exotic Species present and rare Species noxious

Species eradicated

Species not present in state Species extirpated (historic) Species exotic and present

Questionable Presence (cross-hatched)

Permission for use of any of these copyrighted data must be granted in writing from Dr. John Kartesz ( with attribution to BONAP as appropriate (see Citation Information.)

Floristic Synthesis of NA © 2010 BONAP

Torilis nodosa