Heron Pond Trail, Cache River State Natural Area, Johnson County, Illinois, US Click on these geocoordinates to load a map showing the location: 37.35733°, -88.91486°
Coordinate uncertainty about: 200 m.
Location determined from Google maps.
Occurrences were recorded for this particular organism on the following dates: 2002-09-21
Flora of North America Editorial Committee, eds., 1993. Flora of North America North of Mexico. Flora of North America Association, New York, NY, US and Oxford, UK.