United States, Michigan, Berrien, In a gravel and cinders of the D. R. Potts Memorial Horse Complex (race and show oval) at the Berrien Co. Fairgrounds, Berrien Springs.
TRS: T6S R18W S13(null)
Matricaria matricarioides; Polygonum erectum; P. aviculare; Poa annua; Veronica arvensis; Stellaria media