Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Michigan is at the northern edge of range for this species, which may in fact be merely adventive in the state. There are no Michigan records before 1917 (railroad yard at Ypsilanti, Washtenaw Co.). Disturbed ground, usually sandy; disturbed areas on dunes.
The species at least can be fairly easily recognized by the bristles fringing the stipules, much exceeding the unfringed portion as well as the fruit.
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=2579.