This is a widespread western perennial ("spreading by roots") that spreads rarely as a waif into eastern state, but it is virtually unknown in southeastern states (F, Cr, W), There is a coll. from CALL by R. Athey (EKY): #2623, 29 Sep 1973, dry upland openings in Croppie Hollow Subdivision off Ky. 614. This locality is well known for other rare plants, and the uplands probably have a history of open grassy woodland before settlement. Native status is possible for the plant here.