| 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 Station off KY 8, or 9.7 mi E of Manchester, Ohio, off US 52. at Brush Creek Campground. Elev. 153 m, 38.71226° N, -83.460946° W. Elevation 154 m, Concord Quadrangle. |
| Habitat: | Emergent Wetland & Unconsolidated Shoreline. Native annual; infrequent. Associates; Cyperus flavescens, Cyperus strigosus, Cyperus esculentus, Cyperus odoratus. |
| Collector: | Rudy A. Gelis, R.L. Thompson BC-1119 |