The following plants either do not appear on Mr. Cratty's list (1933), in which case they are indicated by an asterisk, or they serve to augment the distributional data of certain of the species listed by him. The specimens are in the herbarium of Iowa State College.
Proceedings of the Iowa Academy of Science
©1942 Iowa Academy of Science, Inc.
Goodman, George J.
"Notes on Iowa Plants,"
Proceedings of the Iowa Academy of Science, 49(1), 207-209.
Available at: https://scholarworks.uni.edu/pias/vol49/iss1/27