United States, Minnesota, Wilkin, Ca. 8.5 mi SW of Campbell; N of Rt.55. Bois de Sioux River (E bank), S1/2 Sec.22 T130N R47W (Campbell Twp.);;130N;47W;22
46.056271 -96.558376 +-800m. WGS84
In moist ground bordering the river, with Polygonum convolvulus, P. lapathifolium, Euphorbia glyptosperma