Long John Slough, Palos Forest Preserve, Palos Hills. 95th St. & 104th Ave. On 104th about 200' south of 95th St. At edge of water.
Growing in standing water of slough
Typha angustifolia, Duckweed sp
Aquatic herb with white to pink petals, yellow center. Padspurple-red beneath. Monoculture covering about 1 acre aroundnorth edge of slough. Somewhat aromatic. Almost a monoculture