OSMUNDACEAE.
Osmunda cinnamomea. (L.) Abundant in swampy areas in the northeastern counties, especially in peaty ground near Lake Michigan within the limits of the ancient glacial Lake Chicago. Swampy areas in sand barrens west of Kankakee, “Menard county. Hall.” (P.) Starved Rock. Clute.
Osmunda Claytoniana (L.) Frequent in swamps and wet woods from Kankakee county north in the eastern part of the state. Peoria, Brendel. Henderson Co., Patterson. “Moist ravines, common.” says Patterson for the state at large.
Osmunda regalis (L.) Has a range similar to the last and is quite frequent northeast in swamps and wet woods. Peoria, Brendel. Mason county, Bebb. Infrequent says Patterson for the state as a whole.