17 October 2015.
Oklahoma, United States
Locality: along Hwy 15, west of N 1940 Rd, southwest of Woodward, Woodward county
Coordinates: 36.4075, -99.5559
(Map it)
Elevation: 660m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Grassland on roadcut and sandy ridge, with deep, sandy soil with Yucca, Artemisia, Salsola, Conyza, and Juniperus.
Comment: pop size 1000; plants up to 1.8 m tall
Collector(s):