United States, Illinois, Brown, West side of Illinois Route 99, 0.7 mile northwest of junction with Illinois Route 104, at Pike County line, west of Meredosia. Alongside utility road following west side of old elevated levee - abandoned railroad bed between road and dredged canal, Illinois River floodplain. Elevation about 433 feet. Meredosia 7.5 minute quadrangle.
39.846597 -90.59817 +-969m.
T.2S, R.2W, SE1/4 SE1/4 SW1/4 SE1/4 SECT. 35
Sandy-loam, moist west-facing slope.; Degraded floodplain forest. Margin of cropland, edge of former railroad bed-now leveled- at north side of site; with Festuca, Barbarea, Apocynum. ; Petals purple, exserted anthers pale orange; rather common shrub 4-5 feet tall .