United States, Minnesota, Dakota, Dakota Co.; "Castle Rock" sandstone outcrop; T 113N R 19W NE1/4 of SW1/4 of SEc 32;;113N;19W;32
44.550874 -93.126525 +-800m. WGS84
sandstone outcrop; on sandstone ledges at base of outcrop. Associated with Panicum virgatum, Andropogon gerardii, Viola pedatifida, Liatris aspera, Polygonum tenue.