12 October 2003.
Iowa, United States
Locality: North of Rattlesnake Bluff, Keosauqua, NE 1/4 of NW 1/4 of Section 21, T69N, R9W, Mount Zion Quad, Van Buren County.
Coordinates: 40.7675, -91.9031
(Map it)
Elevation: 177m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Edge of alfalfa field. Alluvial soil.
Associated species: Toxicodendron, Heliopsis, Solidago, and Cornus drummondii.
Comment: Occasional population abundance with irregular distribution.
Collector(s):