Much new information about the vascular plants of Iowa has resulted from three years of botanical exploration in various parts of the state since the first "Notes" were presented in 1953. Some of the more interesting results of the author's botanical gleanings in the period 1953-1955 have been published (Aikman and Thome 1956, Beal and Monson 1954, Cooperrider 1955a and 1955b, Grant and Thorne 1955, and Thome 1955.) Much more data, however, about species not previously reported from Iowa or rarely collected in the state should be placed on record for interested botanists. This information, with supplementary data from overlooked specimens of earlier collectors, is here presented by families in Englerian sequence, with pertinent comments on the known distribution in Iowa of the rare species. For some of these, associated rare or otherwise noteworthy plants are listed to indicate the richness of several of the habitats. Introduced species, where recognized as such, arc indicated by an asterisk. Numbers not preceded by a name represent the author's collection numbers. All of these collections are deposited in the Herbarium of the State University of Iowa
Proceedings of the Iowa Academy of Science
©1956 Iowa Academy of Science, Inc.
Thorne, Robert F.
"Notes on Rare Iowa Plants - II,"
Proceedings of the Iowa Academy of Science, 63(1), 214-227.
Available at: https://scholarworks.uni.edu/pias/vol63/iss1/15