17 October 2015.
Oklahoma, United States
Locality: edge of dune area, northeast corner close to observation deck and campground, Little Sahara Sand Dunes, south of Waynoka, Woods county
Coordinates: 36.5580, -98.8954
(Map it)
Elevation: 470m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Grassland on semi-stabilized dune ridge, with sandy soil with Prunus and Yucca.
Comment: pop size 10000; plants up to 2.0 m tall
Collector(s):