United States, Minnesota, Clay, Audubon Prairie: 16. 5 mi. ESE of Moorhead. SE1/4 NE1/4 Sec. 32, T139N, R45W.;Audubon Prairie, The Nature Conservancy;139N;45W;32
46.8112046 -96.3982237 +-800m.
Along plowed field ditch on prairie with Panicum virgatum, Mentha arvensis.