27 July 2011.
Pennsylvania, United States
Locality: Along Martin Road, Warren County.
Coordinates: 41.9809, -79.1363
(Map it)
Elevation: 385m.
Environment description: Rich woods.
Number of plants sampled: 6
Associated species: Acer rubrum, Fraxinus americana, Magnolia acuminata, Pinus strobus, Prunus serotina, Quercus velutina, and Spiraea alba.
Collector(s):