United States, Oklahoma, McCurtain, Little River National Wildlife Refuge. Banks of the Little River, ca. 5 mi. W of the Arkansas state line. Vicinity of boat ramp on S side of river, ca. 2.5 mi. N of Goodwater. T7S, R26E, portions of Sect. 14 and 15.
101-104 meters
ca. 330-340 feet AMSL
Common on river edge; some plants lying in shallow water but many on low, sandy banks.