04 June 1991.
Oklahoma, United States
Locality: Comanche County; Summit of Elk Mountain, Wichita Mountains Wildlife Refuge
Coordinates: 34.7206, -98.7211
(Map it)
Georeference protocol: Lat/lon determined by GPS
Environment description: Grazed, slope 0-5% and 11-40%, aspect E/SE. Sand/loam, ridgetop/plateau. pH 6.9.
Number of plants sampled: 40
Collector(s):