The Iowan lobe of the Wisconsin glaciation is located in northeastern Iowa. Evidence is summarized which pertains to the migrations of the regional vegetation following the Wisconsin glaciations. The most recent climatic fluctuation to influence the distribution of the present flora was the Hypsithermal interval. The present distributions of several species are discussed in relation to the postglacial history of the flora. Eleven distribution maps of representative species are included. Most of the distribution patterns can be attributed to factors other than continuing postglacial migration. It appears that these plant distributions are primarily a function of the distribution of available habitats. Most species appear to have had sufficient time since the Hypsithermal interval to complete their migration into the Iowan lobe and to become well established. The need for additional paleobotanical and phytogeographic research in Iowa is stressed.
Proceedings of the Iowa Academy of Science
© Copyright 1965 by the Iowa Academy of Science, Inc.
Eilers, L. J.
"The Postglacial Phytogeography of the Iowan Lobe,"
Proceedings of the Iowa Academy of Science, 72(1), 84-98.
Available at: https://scholarworks.uni.edu/pias/vol72/iss1/16