United States, Wisconsin, Iowa, Arena; Along Hwy 14 on W side of Arena
43.1598058° N, 89.9149766° W; T08N R05E sec21
In ca. 20 acre cornfield (Zea mays), in dense stand with Setaria viridis, S. faberi, Digitaria sanguinalis and Abutilon theophrasti along edge of cornfield but forming an especially dense stand within the field where herbicides had eliminated the other
Common. Seems not to be present in an adjacent cornfield just across a narrow farm road. Erect or strongly ascending except where bent down by its own weight, 1-2 m tall.