The tribes SENECIONEAE, CYNAREAE, and CICHORIEAE of the family Compositae were studied for several reasons. First, no treatment of any of these taxa exists for Iowa. Secondly, the species involved are of considerable interest in that they are morphologically quite complex and present a certain challenge to those dealing with their taxonomy. Some species are of interest in that they are widely distributed throughout the state and form a conspicuous floral element. Other species are extremely rare and nearly unknown from this area. This paper is a condensation of work presented in a thesis by the author (1). The keys have been taken verbatim from it. The annotated list summarizes a discussion of the species which appears in the thesis. Distribution maps are included in the thesis but have been omitted here.
Proceedings of the Iowa Academy of Science
©1953 Iowa Academy of Science, Inc.
Davidson, Robert Austin
"The Senecioneae, Cynareae, and Cichorieae of Iowa,"
Proceedings of the Iowa Academy of Science, 60(1), 98-111.
Available at: https://scholarworks.uni.edu/pias/vol60/iss1/13