Not a very eye catching horseweed. Those little flower heads are not much more than a millimeter across, on plants about a foot tall. Maybe that's part of why no one has noticed it in Michigan before now. Lots of basketball players have probably retrieved balls from the area it grows in around the court in Gerber Hill Park without noticing it. Of course, there may not be too many basketball playing botanists in the little burg of Deerfield. Finding a new state species isn't all that remarkable here in Lenawee County. This find only extends the range by about twenty miles. New finds like this mostly occur near the borders. The park is about ten miles from Ohio. Dwarf horseweed is now known from AL, AR, IA, IL, IN, KS, KY, LA, MI, MN, MO, MS, ND, NE, NM, OH(E), OK, PA, SD, TN, TX, WI, and ON. Lenawee Co MI, 7/28/20. Aster family, Asteraceae.