United States, Illinois, Pike Co., S side IL 100 (old US 36); W of Second Street; Florence; W of IL River; first ridge W of Second Street. T5S, R14W, Sec. 15, NW¼, NE¼, NE¼.
39.6311 -90.28
168 meters
480-550 ft
Dry ridge top; chert and limestone talus and outcrops; calcareous clay; dry upland forest; open understory.
{"habit":"Locally common rhizomatous perennial; flowers white."}