09 September 2011.
Illinois, United States
Locality: Starved Rock State Park, La Salle County.
Coordinates: 41.3200, -89.0000
(Map it)
Elevation: 158m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Floodplain of Illinois River.
Number of plants sampled: 1
Associated species: Acer saccharinum, Alnus, Carpinus caroliniana, Cornus alternifolia, Ilex verticillata, Impatiens capensis, Sassafras albidum, and Tilia americana.
Collector(s):