18 September 1989.
West Virginia, United States
Locality: In crushed rock and organic matter with Xanthium, Ambrosia artemisiifolia, Cichorium and Bidens vulgata 200 m W Co 9/18, on WVA 9 W of Berkeley Springs on hill side of rd, Stotlers crossroads quad. In Morgan Cty.
Coordinates: 39.6167, -78.2500
(Map it)
Elevation: 230m.
Collector(s):