Coefficient of Conservatism:
Coefficient of Wetness:
A. A. Reznicek
Roadsides, shores, and disturbed ground. Locally troublesome weed in agricultural fields in the southwest part of the Lower Peninsula; first collected in Berrien Co. in 1917. Native to the Old World, especially the Mediterranean area, and grown for forage.
Perennial from extensive rhizomes, and often a noxious weed very difficult to eradicate, especially where more abundant southward.