In spite of the fact that Poweshiek County has been the collecting ground for such eminent professional or amateur botanists as H. W. Norris, Frank W. Johnson, and Henry S. Conard, no list of county plants, verified by herbarium specimens, has yet appeared in print. In addition, references to plants of Poweshiek County in the various papers on different genera in Iowa have been very scarce. The first edition of the "Grinnell Flora" by H. S. Conard was a list of the plants, both wild and cultivated, of Grinnell and "vicinity_," but the geographical limits of its coverage are uncertain. In addition it included only the commoner plants and voucher specimens of many of them were apparently not filed at Grinnell.
Proceedings of the Iowa Academy of Science
©1956 Iowa Academy of Science, Inc.
Russell, Norman H.
"A Checklist of the Vascular Flora of Poweshiek County, Iowa,"
Proceedings of the Iowa Academy of Science, 63(1), 161-176.
Available at: https://scholarworks.uni.edu/pias/vol63/iss1/12