23 September 2009.
Wisconsin, United States
Locality: Wisconsin: Waukesha County; Vernon State Wildlife Area, very close to Pebble Brook; NW 1/4 of NW 1/4 of Section 4, T5N, R19E, Genesee Quad.
Coordinates: 42.9281, -88.2672
(Map it)
Elevation: 241m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Wetland open woods. Associated with Acer saccharinum, Angelica atropurpurea, Cirsium muticum, Cornus sericea, Dasiphora fruticosa, Fraxinus nigra, Pedicularis lanciolata, Physocarpus opulifolius, Platanthera psycodes, Prunella vulgaris, Rhus vernix, and Symplocarpus foetidus.
Number of plants sampled: 8
Collector(s):