United States, Illinois, Du Page, About 0.4 to 0.5 mile east of Illinois Route 53 near the Creekside Park bike path bridge over Prentice Creek, Woodridge.
T. 38N, R. 10E, SE1/4 SW1/4 Sect. 14
A small group of 10 to 20 individual plants on and along a coarse gravel bar in a degraded, channelized creek, none of the plants were at this site the previous day. They were probably improperly discarded from a nearby cultivated source. With Setaria faberi, Convolvulus sepium and Ambrosia trifida.