The study of the flora of "The Ledges" furnishes much opportunity for interesting research. Besides possessing some of the most beautiful scenery of Iowa these ledges, with their moisture and shade, make an inviting habitat for plants of many kinds. Of these plants the lichen flora is perhaps the most interesting, because heretofore little work has been done on the flora of perpendicular sandstone exposures, such as are here presented
Proceedings of the Iowa Academy of Science
©1903 Iowa Academy of Science, Inc.
Miller, Katy A.
"The Lichens of "The Ledges," Boone County, Iowa,"
Proceedings of the Iowa Academy of Science, 11(1), 139-146.
Available at: https://scholarworks.uni.edu/pias/vol11/iss1/20