Coefficient of Conservatism:
Coefficient of Wetness:
B. S. Walters
Ditches, wet fields, disturbed pond shores.
At least in eastern North America considered to be introduced from Eurasia; first collected by R. Garlitz in Alpena Co. in 1988.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 4, 2020. https://michiganflora.net/species.aspx?id=2002.