17 December 2013.
Iowa, United States
Locality: Echo Valley Park, near West Union, Fayette County.
Coordinates: 42.9440, -91.7761
(Map it)
Elevation: 325m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Floodplain and at base of slopes
Number of plants sampled: 4
Associated species: Acer negundo, Euonymus atropurpureus, Fraxinus pennsylvanica, Juglans nigra, Vitis riparia, and Xanthoxylem americanum.
Comment: Latitude, longitude, and elevation averaged between those of the four trees sampled. Infrequent abundance. Seed production heavy and relatively still persistent at time of collection.
Collector(s):