USA, Illinois, Carroll, Mississippi River Section of the Illinois River and Mississippi River Sand Areas Natural Division. Ayers Sand Prairie Nature Preserve. About 2.75 mile south and 0.5 miles east of Savanna. Elevation about 609 feet. Wacker Quadrangle.
Dry sand prairie along edge of blowout. Growing with Ambrosia psilostachya, Bouteloua hirsuta, Callirhoe triangulata, Croton glandulosus, Koeleria macrantha, Liatris aspera, Solidago nemoralis,