22 September 2003.
Iowa, United States
Locality: Lacey-Keosauqua State Park, Keosauqua, SE corner of SE 1/4 of NE 1/4 and NE 1/4 of SE 1/4 of Section 3, T68N, R10W, Keosauqua Quad, Van Buren County
Coordinates: 40.7178, -91.9897
(Map it)
Elevation: 177m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Floodplain. Half shaded. Associated with Rhamnus lanceolata, Cercis, Ulmus rubra, Ostrya, and Celtis
Comment: Occasional population abundance with irregular distribution. 10 plants found. Most seeds taken from one tree with better foliage retention.
Collector(s):