| Locality: | United States. Kentucky. Lewis: Brush Creek Island, 17-acres, Ohio River, Mile 388, 2.0 mi E of Concord and 0.2 mi W of Chalkley Sta., KY 8, or 9.7 mi E of Manchester, Ohio, at Brush Creek, Concord Quad. Elev. 500-510'. |
| Habitat: | Elev. 500-520'. Emergent Wetland; rare. Associates: Sagitaria latifolia, Ludwigia palustris, L. decurrens, Ammannia coccinea, Spermacoce glabra, Leersia oryzoides |
| Collector: | Rudy A. Gelis, Michelle Lee Gelis, Paul Hager, R. L. Thompson BC-1018 |