13 September 2003.
Iowa, United States
Locality: 4 miles southeast of Mitchell, SE 1/4 of SE 1/4 of SE 1/4 of Section 8, T98N, R17W, Osage Quad, Mitchell County.
Coordinates: 43.3136, -92.8717
(Map it)
Elevation: 331m.
Georeference protocol: Lat/Lon determined via Map location
Environment description: Floodplain. Alluvial soil with some stoniness, well drained. Associated with Fraxinus pennsylvanica, Acer saccharinum, Sambucus canadensis, and Rudbeckia laciniata.
Number of plants sampled: 3
Comment: Rare population abundance with irregular distribution. 4 plants found.
Collector(s):