| Locality: | United States. Tennessee. DeKalb: Abandoned limestone quarry, 0.4 mi W on TN 141 from jct. TN 96 at Center Hill Dam. Native perennial emergent, locally infrequent; open Marsh-Pond Border Community. |
| Habitat: | Abandoned limestone quarry. Native perennial emergent, locally infrequent; open Marsh-Pond Border Community. Associates: Sagittaria latifolia, Leersia oryzoides, Mimulus alatus, Lycopus americanus, Juncus effusus, Typha latifolia. |
| Collector: | Ralph L. Thompson, Katrina Rivers Thompson 99-826 |