24 September 2003.
Iowa, United States
Locality: Starr's Cave, Burlington, T70N R2W, E edge of NW 1/4 of NW 1/4, Section 19, West Burlington Quad, Des Moines County.
Coordinates: 40.8522, -91.1367
(Map it)
Elevation: 186m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Small, thin soil hill prairie. Sunny. 20% slope with a southern aspect. Stony soil. Associated with Cassia fasciculata, Pycnanthemum pilosum, Agalinis, and Echinacea pallida.
Number of plants sampled: 10
Comment: Occasional population abundance with irregular distribution. 25 plants found.
Collector(s):