10 October 2008.
Pennsylvania, United States
Locality: Along Clarion River near bridge which crosses Gravel Lick; some were found south along the east side of river, Clarion County.
Coordinates: 41.3069, -79.2439
(Map it)
Environment description: Narrow graminoid dominated strip on riverbank and edge of forest. Sandy soil over cobbles, full exposure. Growing in association are Phalaris arundinacea, Helenium autumnale, Sorghastrum nutans, Spartina pectinata, Andropogon gerardi.
Number of plants sampled: 40
Comment: Plants are native
Collector(s):