United States, Minnesota, Clay, Audubon Prairie: 16.5 mi ese of Moorhead. NW1/4 NW1/4 Sec.32 T139N R45W.;Audubon Prairie, The Nature Conservancy;139N;45W;32
46.812051 -96.515485 +-951m.
Along ditch near open water with Lilium philadelphicum, Lactuca pulchella, Phalaris arundinacea.