With intent to determine (1) what plants were available to bees in late summer, (2) how these plants were located with reference to water reservoirs and (3) which of these plants were most valuable to the bee, some observations were made in Clayton County, Iowa, August 20 to September 9, 1919. The vicinity of McGregor, Beulah, Garnavillo, Guttenberg, Clayton. Prairie-du-Chien, and some of the adjacent islands of the Mississippi about McGregor were visited. Since the water supply is related to the topography and the distribution of plants is relative to both these factors, the geology and topography should be kept in mind.
Proceedings of the Iowa Academy of Science
©1920 Iowa Academy of Science, Inc.
"Notes on the Distribution of Midsummer Bee Plants in the Mississippi Zone of Clayton County,"
Proceedings of the Iowa Academy of Science, 27(1), 109-121.
Available at: https://scholarworks.uni.edu/pias/vol27/iss1/14