10 September 2010.
Iowa, United States
Locality: Along North Raccoon River and Sportsman Club Road, north of Adel, NW 1/4 of NW 1/4 of Section 18, T79N, R27W, Panther Quad, Dallas County.
Coordinates: 41.6560, -94.0451
(Map it)
Elevation: 322m.
Environment description: Floodplain. Associated with Acer negundo, A. saccharinum, Celtis occidentalis, Gleditsia triacanthos, and Gymnocladus dioicus.
Comment: Approximately 50-75 plants sampled.
Collector(s):
18 September 2015.
Iowa, United States
Comment: Recollected.
Collector(s): - Aviles, Alex, USDA, ARS
- Carstens, Jeffrey D., USDA, ARS, NCRPIS
- Hopkins, Cole, USDA, ARS, NCRPIS