21 September 2009.
Wisconsin, United States
Locality: Along Blue River, near bridge on Bowers Road, Snow Bottoms State Natural Area, SW 1/4 of SW 1/4 of Section 35, T7N, R1W, Highland West Quad, Grant County.
Coordinates: 43.0317, -90.4650
(Map it)
Elevation: 262m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Riverbank. Associated with Acer negundo and Salix.
Number of plants sampled: 18
Comment: Scattered population.
Collector(s):