08 October 2008.
Pennsylvania, United States
Locality: From north shore of Susquehanna River, east of Columbia/Montour county line. Bushwack south over railroad grade and wade in river to Clark's island. Go south and wade over to Manches Island at east end.
Coordinates: 40.9492, -76.5069
(Map it)
Environment description: Site is a gravel bar herb dominated or without vegetation. Scattered trees are present. To the west (downstream) island becomes more forested. Gravelly, cobbley, full exposure.
Number of plants sampled: 200
Comment: Present are Betula nigra, Planatus occidentalis, Apocyum cannibinum, Hypericum ascyon, Xanthium, Acer saccharinum, Spartina pectinata, Eupatoriumserotinum, Andropogon gerardi. Perfect native site and plants.
Collector(s):