22 September 2009.
Wisconsin, United States
Locality: Helena Unit, Lower Wisconsin State Riverway, SW 1/4 of NE 1/4 of Section 17, T8N, R4E, Spring Green Quad, Iowa County.
Coordinates: 43.1681, -90.0394
(Map it)
Elevation: 216m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Wisconsin River watershed/floodplain
Number of plants sampled: 1
Associated species: Acer saccharinum, Carya cordiformis, Lobelia cardinalis, Lysimachia, Quercus macrocarpa, Stachys, Toxicodendron radicans, and Vitis riparia.
Collector(s):