Notes on Rare Iowa Plants

Three years of field work in Iowa (1950-1952) have turned up many vascular plants that have been unreported previously from Iowa, that have not been collected in many years, or that have been generally considered rare in the state. For the information of botanists who might be interested in them, these collections are listed here in Englerian sequence with pertinent comments. Included with them are a few noteworthy species represented by old herbarium specimens that had been misidentified or otherwise overlooked heretofore. For some of the included species associated plants have been listed as being the best indicators of the type of habitat in which the species might be sought. Introduced species are indicated by an asterisk. Numbers not preceded by a collector\u27s name represent the writer\u27s collection numbers. All of the writer\u27s collections are deposited in the Herbarium of the State University of Iowa