United States, Illinois, Alexander, Illinois Route 3 (FAP 312), McClure, at bridge crossing Old Clear Creek, 1.85 miles north of East Cape Girardeau Road (Illinois Route 146), Mississippi River floodplain. McClure 7.5 minute U.S.G.S. quadrangle. Elevation about 340 feet.
T. 14S, R. 3W, NW1/4 SE1/4 NE1/4 NE1/4 Sect. 9
Disturbed moist sandy loam; alluvial deposits.; Floodplain forest, degraded, dominated by Populus deltoides, Acer negundo, Acer saccharum, Celtis laevigata, Campsis radicans.; Flowers indigo-purple, anthers orange; infrequent shrub 2 meters tall, at the base of wet disturbed roadbank next to open water in full sun.