NatureServe compiles and maintains extensive data on the plants of the United States and Canada. However, at this time there are no downloadable datasets available for plants.
Our NatureServe Explorer website provides extensive information on more than 65,000 plants, animals, and ecosystems of the United States and Canada from our central databases. Searches can be conducted by species name, taxonomic group, distribution, conservation status, and invasive species status (for plants not native to the United States.)
Which non-native plants pose the most serious threats to native species and ecosystems? Our “Invasive Species Assessment Protocol” assesses non-native plants found in North America according to their impacts on native plants, animals, and natural communities.
NatureServe Explorer now includes these impact ranks, or "I-ranks", for hundreds of non-native plant species of the U.S. Individual "I-ranks" (high, medium, low, or insignificant) are listed in the reports for each individual species.