| Locality: | United States. Kentucky. Clark: Ford Quadrangle, abandoned limestone quarry, 0.9 mi W of jct Ky. 1924 on Ky. 418 (Old Athens-Boonesboro Road), and 0.2 mi E of Lisletown (Halls on the River) adajcent to Kentucky River. |
| Habitat: | Abandoned limestone quarry. Edge of ponded area; native perennial, abundant. Associates: Scirpus atrovirens, S. validus, Sagittaria australis, Juncus effusus, Mentha piperita, Lycopus americanus, Mimulus ringens, Lemna minor. |