]> GH barcode-01643773 United States of America Oklahoma ca. 4.6 miles SW of jct. of Rtes. 99 & 99C, ca. 5.0 miles Sw of Madill. Sec. 11, T6S, R4E Oenothera speciosa Nuttall Nuttall 2020-05-14 10:13:55 C. B. Hellquist & L. Crouch