]> GH barcode-01632265 United States of America Oklahoma on the west side of Rtes. 87 & 259 at the extreme SW 1/4 of Sec. 32, T8S, R24E Echinodorus cordifolius (Linnaeus) Grisebach (Linnaeus) Grisebach 2020-05-05 15:03:42 C. B. Hellquist & L. Crouch