- The Tallgrass Prairie in Illinois
- Images of Prairie Plants
- Fruits, Seeds, and Seedlings of Prairie Plants
- The Herbarium of the Illinois Natural History Survey (ILLS)
- Planning With Plants in Illinois: The Nature Preservation Movement
- Corridors for Tomorrow project [not an active project]
- Links for Using Native Plants in the Landscape
Acknowledgement: This is the work of Dr. Kenneth Robertson, who retired from the Illinois Natural History Survey in 2008, but is still pursuing his love of plants. He is a plant systematist (taxonomist), which means that he studies how plants are classified and related to each other. As visitors can see, he is also interested in natural areas in Illinois, especially prairies, and in botanical gardens and arboreta.