United States, Illinois, Cass Co., Beardstown, vicinity of dug out sand pond W of WalMart shopping center; Beardstown 7.5' quad. T18N, R12W, Sec. 22, SE¼ of NW¼.
40.0196 -90.4357
Sandy soil; on sandy outwash fan at W side of pond; with Eleocharis obtusa; alo with Fimbristylis spp., Echinochloa, Eragrostis.