Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Native of Asia, grown as a potherb and very rarely collected as an escape from cultivation. O. A. Farwell gathered it on disturbed ground at Detroit, Wayne Co. in 1893 and 1912; and M. B. Fallass, near a railroad at Grand Rapids, Kent Co., in 1904.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 17, 2017. http://michiganflora.net/species.aspx?id=60.