United States, Illinois, Lee, Green River State Conservation Area. Green River Lowland Section of the Grand Prairie Natural Division. Coordinate Datum: WGS84/NAD83.
41.63398 -89.48897
T. 19N, R. 9E, NE1/4 NE1/4 SW1/4 Sect. 17
In wet-mesic sand prairie with Asclepias hirtella, Carex muhlenbergii, Convolvulus sepium, Eleocharis verrucosa, Juncus greenei, Lepidium densiflorum, Lythrum alatum, Oxalis dillenii, Polygala polygama, Scleria triglomerata, etc. Perennial herb.