Flora of North America
* FNA website (online treatments)
State Floras - Online
* Texas
- UT-Austin (UTexas Herbarium specimen data)
- Texas A&M (compiled database)
- other resources for Texas floristics (Texas Links on BRIT web page)
* New Mexico
- INRAM Biodiversity Division (data from various NM museums)
- New Mexico State University Range Science Herbarium (NMCR)
* Oklahoma (Oklahoma Vascular Plants Database)
* Arkansas (Arkansas Biodiversity: The Vascular Flora)
* Louisiana (LSU Herbarium Database)
* Mississippi (The Pullen Herbarium: MISS)
* Alabama (Univ. of Alabama Herbarium; they direct you to GBIF)
* Georgia (The Vascular Plant Atlas of Georgia: Ferns, gymosperms, monocots)
* Tennessee (Database of Tennessee Vascular Plants - including Atlas)
* Florida (Atlas of Florida Vascular Plants)
* South Carolina (South Carolina Plant Atlas)
* North Carolina (NCU Flora of the Southeastern United States)
* Virginia (Digital Atlas of the Virginia Flora)
* Weakley's Flora of Virginia and the Carolinas
