16 September 2011.
Pennsylvania, United States
Locality: South of US Highway 6, McKean County.
Coordinates: 41.6630, -78.7890
(Map it)
Elevation: 636m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Along abandoned railroad tracks.
Number of plants sampled: 6
Associated species: Acer rubrum, Acer saccharum, Daucus carota, Fragaria, Populus tremuloides, Prunus serotina, and Securigera varia.
Collector(s):