Madison is a prairie county, yet nearly one-fourth of its area was covered at some time, with timber. The surface, generally speaking, is quite undulating, becoming broken along the courses of the streams. Thus the conditions for a varied flora are favorable, from plants growing on the high prairies to those growing on the timbered hillsides, in the swamps, and along the creeks and rivers.
Proceedings of the Iowa Academy of Science
©1903 Iowa Academy of Science, Inc.
Mueller, H. A.
"A Preliminary List of the Flowering Plants of Madison County,"
Proceedings of the Iowa Academy of Science, 11(1), 261-279.
Available at: https://scholarworks.uni.edu/pias/vol11/iss1/34