21 July 2012.
Illinois, United States
Locality: Trelease and Brownfield Woods, SE 1/4 of Section 34, T20N, R9E, and SW 1/4 of Section 1, T19N, R9E, Thomasboro Quad, near Urbana, Champaign County.
Coordinates: 40.1469, -88.1631
(Map it)
Elevation: 229m.
Environment description: Mature, moist woods. Very flat terrain.
Number of plants sampled: 9
Associated species: Acer saccharum, Aesculus glabra, Asimina triloba, Celtis occidentalis, Fraxinus americana, Juglans nigra, Quercus macrocarpa, Q. muhlenbergii, and Toxicodendron radicans.
Comment: Scattered specimens throughout area. Seeds fully mature at time of collection.
Collector(s):