]> GH barcode-02400098 United States of America Oklahoma eastern end of Caddo Lake ca. 1.5 miles west of Witchita Mts. Nat'l Wildlife Refuge headquarters, Sec. 13, T3N, R15W Juncus marginatus Rostkovius Rostkovius 2022-05-10 09:46:05 C. B. Hellquist & L. Crouch