23 September 2009.
Wisconsin, United States
Locality: Near Mill Brook, Vernon State Wildlife Area, NW 1/4 of SE 1/4 of SW 1/4 of Section 5, T5N, R19E, Genesee Quad, Waukesha County.
Coordinates: 42.9183, -88.2814
(Map it)
Elevation: 240m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Wetland open woods.
Number of plants sampled: 3
Associated species: Alnus incana subsp. rugosa, Fraxinus nigra, and Salix.
Collector(s):