10 October 2008.
Illinois, United States
Locality: Union County Conservation Area, SW 1/4 of SW 1/4 of Section 19, T13S, R2W, McClure Quad, Union County.
Coordinates: 37.3650, -89.3778
(Map it)
Elevation: 104m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Growing in standing water.
Number of plants sampled: 12
Associated species: Acer rubrum, Carya illinoiensis, Cornus amomum, Liquidambar stryaciflua, and Ulmus americana.
Collector(s):