United States, Minnesota, Blue Earth, 0.75 mi W of Mapleton on main E-W hwy through town, in soybean field 30 feet N of highway. Halverson's farm. NW1/4 NE1/4 of section;;105N;26W;04
43.932682 -93.956042 +-220m.
In soybean field. Not known outside of this locale.
Plants said to have been present at least 15 years ago. Necrotic spots on leaves caused by herbicide "Basagran" as well as alfalfa webworm, Loxosteege commixtalis.