]> GH barcode-01687482 United States of America Nebraska 5 miles W of Roubadeau Pass, Old Oregon Trail, ca. 16 miles southwest of Gering Physaria ludoviciana (Nuttall) O'Kane & Al-Shehbaz (Nuttall) O'Kane & Al-Shehbaz 2020-06-23 15:14:21 R. C. Rollins & Richard C. Rollins