11 November 2010.
Louisiana, United States
Locality: South side of Highway 190, approximately 500 feet west of intersection with Highway LA 1026 (Juban Rd), east of Denham Springs, Livingston County.
Coordinates: 30.4827, -90.9197
(Map it)
Elevation: 14m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Moist roadside ditch, along brushy fenceline and into field along billboard and fence (unmowed area).
Number of plants sampled: 40
Comment: Population of 75.
Collector(s):