16 June 2015.
Iowa, United States
Locality: Elk Rock State Park approximately 6.25 miles north of Knoxville. Extreme northern point of park. T76N R19W SW 1/4 SW 1/4 Sec. 5 Marion County
Coordinates: 41.4088, -93.0796
(Map it)
Elevation: 219m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Relatively steep, north-facing slopes (55 degrees). Growing in association with Diervilla lonicera (rare), Tilia americana (large and abundant), Rosa multiflora, Lonicera maackia, Eleagnus umbellata, Quercus rubra, Viburnum rafinesqueanum, Sanguinaria canadensis, Staphylea trifolia, and Ostrya virginiana.
Number of plants sampled: 50
Comment: Collection made along a 0.25 linear mile stretch, approxiamtely 50 specimens sampled.
Collector(s):