United States, Minnesota, Yellow Medicine, Four miles south south-east of Gary, SD.
44.75 -96.42
T115N R46W sec28
1524 meters (4999ft)
Plants growing on gravelly ridges throughout dry prairie that appears to have become degraded from grazing. Associates include Bromus inermis, Poa pratense, and Rudbeckia hirta. A. patens was observed blooming at this time throughout a number of sites in NW Yellow Medicine County this year.