Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
A. gracilis of Michigan Flora.
A native of South America, rarely introduced as far north as Michigan; first collected by O. A. Farwell at Detroit (Wayne Co.) in 1932 and not again until 2011, when collected as a garden weed in Lenawee Co.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://michiganflora.net/species.aspx?id=59.