27 August 2012.
Colorado, United States
Locality: Dunes northwest of Pinon Flats Campground, Great Sand Dunes National Park, Saguache County.
Coordinates: 37.7675, -105.5150
(Map it)
Elevation: 782m.
Environment description: Sand dunes. Sandy soil.
Comment: Collected with permission of Great Sand Dunes National Park. Population of thousands of plants.
Collector(s):