In the genus Antennaria, commonly known as Indian Tobacco, the color of the style arms (usually red or white) is used as a distinctive character in the descriptions of many species, and is emphasized in at least one key. My study of the genus as it occurs in Iowa convinces me that this character is too variable to have any diagnostic value.
Proceedings of the Iowa Academy of Science
©1926 Iowa Academy of Science, Inc.
"The Taxonomic Value of Style Color in the Genus Antennaria,"
Proceedings of the Iowa Academy of Science, 33(1), 129-130.
Available at: https://scholarworks.uni.edu/pias/vol33/iss1/15