We have only meagre knowledge of the composition and the functions performed by vegetation in Wisconsin cities. The records of the U.S. Government Land Survey conducted in the 1830s provide information on the presettlement vegetation. Likewise, the notes and letters of settlers and early residents speak of the plants they found here, or brought with them. We know less about the vegetation now growing in our cities.
Boehmer, C. and F. Stearns. 1981. Volunteer urban vegetation of Racine, Wisconsin. Field Station Bulletin 14(1): 11-14.