]> GH barcode-01624946 United States of America Oklahoma Gulf Slope; Central Lowland; Red River Basin; north side of North Fork of Red River about 6.5 miles north of Texola. Calylophus serrulatus (Nuttall) P. H. Raven (Nuttall) P. H. Raven 2020-05-05 15:49:22 R. T. Clausen & H. Trapido