]> GH barcode-01687878 United States of America Oklahoma Antelope Hills. (7 mi. W of Packsaddle Bridge) 3 mi. E & 2 N of Durham Physaria ovalifolia (Rydberg) O'Kane & Al-Shehbaz (Rydberg) O'Kane & Al-Shehbaz 2020-04-09 17:54:58 U. T. Waterfall