United States, Illinois, Mason, Sand Prairie-Scrub Oak Nature Preserve. Illinois River Section of the Illinois River and Mississippi River Sand Areas Natural Division. About 3.6 miles east and then 1.3 miles south of Bath. Kilbourne Quadrangle. Elevation about 500 feet.
Growing in open sand Savanna with Carya texana, Prunus serotina (saplings), Quercus marilandica, Quercus velutina, Ambrosia psilostachya, Tephrosia virginiana. Perennial herb.