United States, Oklahoma, Marshall Co., Inlet of Lake Texoma, locally known as Mayfild Flats, 0.25 mi. W of Oklahoma Biolagical Station. T8S, R5E, Sec. 8 NW¼.
35 -98
Open Salix nigra marsh; in open areas, soild saturated occasionally with Typha latifolia; standing water, sandy soil.