Coefficient of Conservatism:
Coefficient of Wetness:
A. A. Reznicek
An Australian annual rather recently becoming a weed in gardens and disturbed urban areas in the southern Great Lakes region. First collected in Michigan in 2010 by A. A. Reznicek in Washtenaw Co.
The larger leaves have 3–4 coarse teeth and the axillary inflorescences are bracteate with small toothed leaves. Plants may be ± erect to prostrate in growth form.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 7, 2021. https://michiganflora.net/species.aspx?id=2861.