21 September 2009.
Wisconsin, United States
Locality: Near the Blue River, Snow Bottoms State Natural Area, SW 1/4 of SW 1/4 of Section 35, T7N, R1W, Highland West Quad, Grant County.
Coordinates: 43.0361, -90.4678
(Map it)
Elevation: 262m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Riverbank. Associated with Achillea millefolium, Agrimonia, Monarda fistulosa, Prunella vulgaris, Trifolium pratense, and Ulmus.
Number of plants sampled: 25
Comment: Very localized population.
Collector(s):