The weed flora of Iowa - Pammel, L. H. (Louis Hermann), 1862-1931.; King, Charlotte M, 1864-1937.; Martin, John Nathan, 1875-; Gilman, J. C.; Cunningham, Jules Cool, 1879-1948.; Hayden, Ada, 1884-1950.; Butcher, F. D.; Porter, D.; Rothacker, R. R. (Des Moines, Published by the Iowa Geological survey, by the state of Iowa, 1926)
Bibliography: p. 664-671.
Keywords: Weeds -- Iowa; Flowers -- Iowa