]> GH barcode-01734409 United States of America Oklahoma small pond on the south side of Rte. 99, 0.5 mile south of the jct. of Rtes. 99 & 70, Madill, Sec. 34, T5S, R5E Zannichellia palustris Linnaeus Linnaeus 2023-04-13 10:44:07 C. B. Hellquist & L. Crouch