19 September 2011.
Arkansas, United States
Locality: Arkansas: Phillips County, Collected on roadside of St. Francis National Park Scenic Byway (Storm Creek Road) 1 mile southeast of junction with County Road 242.
Coordinates: 34.5683, -90.6271
(Map it)
Elevation: 358m.
Environment description: Roadside
Comment: Seed and voucher collected.
Collector(s):