United States, Minnesota, Anoka, Anoka Co. Allison Savanna, on the W edge of area burned, ca. 40 m S of co. rd 26; N1/2 NE1/4 Sec. 2 T33N R23W;Helen Allison Savanna Scientific Natural Area;033N;23W;2
45.3777015 -93.1738785 +-800m.
Collected on edge of area burned spring 1975 (3 years out of 4), in partial shade of scattered Quercus macrocarpus, in well drained sandy soil, with Potentilla arguta, Amorpha canescens, and Anemone,