]> GH barcode-01992861 United States of America Arkansas Arkansas River Valley Province: at S. E. base of Horseshoe Mountain (Little Short Mountain) (T. 8 N., R. 26 W., Sect. 31, west 1/2).; 5 miles WNW. of Paris. Acmispon americanus (Nuttall) Rydberg (Nuttall) Rydberg 2021-02-08 13:03:55 H. H. Iltis