]> GH barcode-01780371 United States of America Oklahoma Clayton Lake at recreation area ca. 4.0 miles SE of Clayton, SE 1/4 Sec. 21, T1N, R19E Ludwigia peploides subsp. glabrescens (Kuntze) P. H. Raven (Kuntze) P. H. Raven 2020-05-11 18:28:17 C. B. Hellquist & L. Crouch