07 October 2008.
Missouri, United States
Locality: Graham Cave State Park, SW 1/4 of SW 1/4 of Section 22, T48N, R6W, Montgomery City Quad, Montgomery County.
Coordinates: 38.9061, -91.5781
(Map it)
Elevation: 232m.
Georeference protocol: Lat/lon determined by GPS
Number of plants sampled: 18
Associated species: Acer saccharum, Fraxinus quadrangulata, Quercus muhlenbergii, Taenidia integerrima, and Vernonia.
Collector(s):