Coefficient of Conservatism:
Coefficient of Wetness:
Native from the prairie regions southwest into Mexico, occasionally adventive eastward. Collected in Michigan in 1924 (B. A. Walpole 1642, BLH) at Buckley (Wexford Co.), presumably as a waif.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 14, 2017. http://www.michiganflora.net/species.aspx?id=1285.