United States, ILLINOIS, Rock Island, Rock Island; along railroad tracks just northwest of Quad Cities Botanical Center, north of 4th Avenue; just south of Sylvan Slough of the Mississippi River. Elev. 580 ft. Davenport East 7.5 min. quad.
T. 18N, R. 2W, S1/2 NW1/4 SECT. 36
Fill gravel and soil; mostly calcareous.; Weeds along railroad.; Occasional annual herb along railroad tracks; dried fruiting plants.