The flora of the loess in western Iowa is unique, in many respects. While it may be said that many parts of the state have a typical prairie flora, certain species being common from Texas to British America, east to Wisconsin, Illinois and Indiana, only occasionally do we find plants of the great-plains in our own state. Western species are somewhat unequally distributed in our state; they occupy a larger area in north western Iowa than in southern and western. In northern Iowa a few prominent types appear, as in Emmet County. Of these I may mention Bouteloua oligostachya, Agropyrum caninum, A. caesium, Grindelia squarrosa, Helianthus Maximiliani. The latter is not, however, a typical western plant, though introduced in central Iowa. It crosses our western border on the loess and extends south to Texas.
Proceedings of the Iowa Academy of Sciences
©1895 Iowa Academy of Science, Inc.
Pammel, L. H.
"Notes on the Flora of Western Iowa,"
Proceedings of the Iowa Academy of Science, 3(1), 106-135.
Available at: https://scholarworks.uni.edu/pias/vol3/iss1/29