United States, Michigan, Kent, Oakfield Twp., Flat Iron Lake, ca. 9 miles east of rockford. T9N, R9W, sec. 33. N 43° 7.428', W 85° 23.058'; elev. 258 m
Margin with extensive zones of Decodon verticullatus, Peltandra viriginica, and Typha spp. Occasional; growing in wet mud, mixed with vegetation along margin