25 September 2009.
Illinois, United States
Locality: Savanna Army Depot, SW 1/4 of SE 1/4 of Section 3, T25N, R2E, Green Island Quad, Carroll County.
Coordinates: 42.1828, -90.2606
(Map it)
Elevation: 196m.
Georeference protocol: Lat/lon determined by GPS
Habitat: Wild Habitat
Environment description: Roadside. Very dry, sandy soil.
Number of plants sampled: 50
Associated species: Chamaechrista fasciculata, Hypericum perforatum, Opuntia humifusa, Quercus velutina, Solidago, Sorghastrum nutans, Ulmus, and Verbascum thapsus.
Comment: Very localized population.
Collector(s):