United States, Illinois, Cook, Watersmeet Forest Preserve.
Watersmeet Forest Preserve. Northfield: Happ Road south of Winnetka Road, in sedge meadow south of prairie/mowed area off Winnetka Road.
Wet sedge meadow area in prairie
Lythrum alatum, L. salicaria, Juncus torreyi, J. tenuis, Iris virginica var. shrevii, Helianthus groseserratus, Ludwigia palustris var. americana, Lycopus americanus, Phalaris arundinacea